/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:02:31,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:02:31,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:02:31,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 11:02:31,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 11:02:31,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 11:02:31,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 11:02:31,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 11:02:31,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 11:02:31,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 11:02:31,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 11:02:31,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 11:02:31,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 11:02:31,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 11:02:31,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 11:02:31,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 11:02:31,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 11:02:31,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 11:02:31,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 11:02:31,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 11:02:31,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 11:02:31,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 11:02:31,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 11:02:31,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 11:02:31,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-21 11:02:31,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-21 11:02:31,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-21 11:02:31,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-21 11:02:31,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-21 11:02:31,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-21 11:02:31,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 11:02:31,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 11:02:31,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 11:02:31,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 11:02:31,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 11:02:31,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 11:02:31,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 11:02:31,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 11:02:31,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 11:02:31,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 11:02:31,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 11:02:31,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-21 11:02:31,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:02:31,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:02:31,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:02:31,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:02:31,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:02:31,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:02:31,916 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:02:31,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:02:31,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:02:31,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:02:31,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:02:31,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:02:31,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:02:31,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:02:31,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:02:31,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:02:31,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:02:31,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:02:31,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:02:31,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:02:32,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:02:32,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:02:32,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:02:32,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:02:32,835 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:02:32,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-1.i [2021-08-21 11:02:32,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d5ddb68/a65fc00f4fec44728c1c074eafbb8483/FLAG0b7eb3975 [2021-08-21 11:02:33,374 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:02:33,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i [2021-08-21 11:02:33,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d5ddb68/a65fc00f4fec44728c1c074eafbb8483/FLAG0b7eb3975 [2021-08-21 11:02:33,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d5ddb68/a65fc00f4fec44728c1c074eafbb8483 [2021-08-21 11:02:33,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:02:33,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:02:33,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:02:33,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:02:33,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:02:33,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:02:33" (1/1) ... [2021-08-21 11:02:33,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f2a920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:33, skipping insertion in model container [2021-08-21 11:02:33,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:02:33" (1/1) ... [2021-08-21 11:02:33,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:02:33,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:02:34,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i[30920,30933] [2021-08-21 11:02:34,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:02:34,125 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:02:34,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i[30920,30933] [2021-08-21 11:02:34,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:02:34,170 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:02:34,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34 WrapperNode [2021-08-21 11:02:34,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:02:34,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:02:34,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:02:34,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:02:34,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:02:34,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:02:34,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:02:34,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:02:34,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:02:34,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:02:34,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:02:34,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:02:34,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (1/1) ... [2021-08-21 11:02:34,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:02:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:34,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 11:02:34,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 11:02:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-08-21 11:02:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-08-21 11:02:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-08-21 11:02:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-08-21 11:02:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:02:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 11:02:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:02:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:02:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:02:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 11:02:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:02:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:02:34,327 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:02:34,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:02:34,518 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-21 11:02:34,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:02:34 BoogieIcfgContainer [2021-08-21 11:02:34,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:02:34,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:02:34,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:02:34,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:02:34,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:02:33" (1/3) ... [2021-08-21 11:02:34,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40689471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:02:34, skipping insertion in model container [2021-08-21 11:02:34,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:02:34" (2/3) ... [2021-08-21 11:02:34,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40689471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:02:34, skipping insertion in model container [2021-08-21 11:02:34,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:02:34" (3/3) ... [2021-08-21 11:02:34,524 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-1.i [2021-08-21 11:02:34,527 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:02:34,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:02:34,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 11:02:34,528 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:02:34,549 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,549 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,549 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,550 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,550 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,550 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,550 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,554 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,554 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,554 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,555 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,557 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,557 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,557 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,557 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,558 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,558 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,558 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,559 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,559 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,559 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,559 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,561 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,562 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,562 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,562 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,562 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,562 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:02:34,568 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 11:02:34,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:02:34,612 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 11:02:34,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-21 11:02:34,620 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-08-21 11:02:34,673 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-21 11:02:34,686 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:34,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:34,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1934908895, now seen corresponding path program 1 times [2021-08-21 11:02:34,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:34,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150700280] [2021-08-21 11:02:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:34,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:35,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:35,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150700280] [2021-08-21 11:02:35,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150700280] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:35,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:35,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:02:35,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886790205] [2021-08-21 11:02:35,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:02:35,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:35,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:02:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:02:35,043 INFO L87 Difference]: Start difference. First operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:35,152 INFO L93 Difference]: Finished difference Result 1756 states and 4724 transitions. [2021-08-21 11:02:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:02:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-21 11:02:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:35,175 INFO L225 Difference]: With dead ends: 1756 [2021-08-21 11:02:35,175 INFO L226 Difference]: Without dead ends: 1425 [2021-08-21 11:02:35,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-21 11:02:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-08-21 11:02:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-08-21 11:02:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.7184986595174263) internal successors, (3042), 1119 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-08-21 11:02:35,291 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-08-21 11:02:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:35,291 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-08-21 11:02:35,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-08-21 11:02:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-21 11:02:35,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:35,295 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:35,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:02:35,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:35,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1007583897, now seen corresponding path program 1 times [2021-08-21 11:02:35,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:35,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448815319] [2021-08-21 11:02:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:35,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:35,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:35,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448815319] [2021-08-21 11:02:35,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448815319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:35,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:35,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:02:35,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796332985] [2021-08-21 11:02:35,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:02:35,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:02:35,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:02:35,433 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:35,519 INFO L93 Difference]: Finished difference Result 1809 states and 4788 transitions. [2021-08-21 11:02:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 11:02:35,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-21 11:02:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:35,527 INFO L225 Difference]: With dead ends: 1809 [2021-08-21 11:02:35,527 INFO L226 Difference]: Without dead ends: 1505 [2021-08-21 11:02:35,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:02:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-08-21 11:02:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1184. [2021-08-21 11:02:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.679628064243449) internal successors, (3170), 1183 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3170 transitions. [2021-08-21 11:02:35,563 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3170 transitions. Word has length 37 [2021-08-21 11:02:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:35,563 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3170 transitions. [2021-08-21 11:02:35,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3170 transitions. [2021-08-21 11:02:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-21 11:02:35,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:35,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:35,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:02:35,569 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1664778053, now seen corresponding path program 2 times [2021-08-21 11:02:35,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:35,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457355779] [2021-08-21 11:02:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:35,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:35,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:35,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457355779] [2021-08-21 11:02:35,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457355779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:35,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:35,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:02:35,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028811585] [2021-08-21 11:02:35,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:02:35,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:02:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:02:35,667 INFO L87 Difference]: Start difference. First operand 1184 states and 3170 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:35,762 INFO L93 Difference]: Finished difference Result 2065 states and 5492 transitions. [2021-08-21 11:02:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 11:02:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-21 11:02:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:35,768 INFO L225 Difference]: With dead ends: 2065 [2021-08-21 11:02:35,768 INFO L226 Difference]: Without dead ends: 1734 [2021-08-21 11:02:35,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-08-21 11:02:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-08-21 11:02:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1304. [2021-08-21 11:02:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 2.7206446661550268) internal successors, (3545), 1303 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3545 transitions. [2021-08-21 11:02:35,830 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3545 transitions. Word has length 37 [2021-08-21 11:02:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:35,830 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 3545 transitions. [2021-08-21 11:02:35,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3545 transitions. [2021-08-21 11:02:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-21 11:02:35,833 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:35,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:35,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:02:35,834 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:35,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1626203799, now seen corresponding path program 1 times [2021-08-21 11:02:35,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:35,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125062798] [2021-08-21 11:02:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:35,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:35,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:35,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125062798] [2021-08-21 11:02:35,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125062798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:35,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:35,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:02:35,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769470196] [2021-08-21 11:02:35,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:02:35,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:02:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:02:35,971 INFO L87 Difference]: Start difference. First operand 1304 states and 3545 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:36,056 INFO L93 Difference]: Finished difference Result 2270 states and 6052 transitions. [2021-08-21 11:02:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 11:02:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-21 11:02:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:36,066 INFO L225 Difference]: With dead ends: 2270 [2021-08-21 11:02:36,066 INFO L226 Difference]: Without dead ends: 2003 [2021-08-21 11:02:36,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:02:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-08-21 11:02:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1514. [2021-08-21 11:02:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.701916721744878) internal successors, (4088), 1513 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-08-21 11:02:36,105 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-08-21 11:02:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:36,106 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-08-21 11:02:36,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-08-21 11:02:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:02:36,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:36,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:36,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:02:36,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1743769903, now seen corresponding path program 1 times [2021-08-21 11:02:36,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:36,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816184879] [2021-08-21 11:02:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:36,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:36,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:36,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816184879] [2021-08-21 11:02:36,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816184879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:36,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:36,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:02:36,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629599505] [2021-08-21 11:02:36,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:02:36,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:02:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:02:36,232 INFO L87 Difference]: Start difference. First operand 1514 states and 4088 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:36,295 INFO L93 Difference]: Finished difference Result 2203 states and 5812 transitions. [2021-08-21 11:02:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:02:36,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:02:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:36,302 INFO L225 Difference]: With dead ends: 2203 [2021-08-21 11:02:36,302 INFO L226 Difference]: Without dead ends: 2051 [2021-08-21 11:02:36,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-21 11:02:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-08-21 11:02:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1539. [2021-08-21 11:02:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 2.6937581274382314) internal successors, (4143), 1538 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4143 transitions. [2021-08-21 11:02:36,339 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4143 transitions. Word has length 42 [2021-08-21 11:02:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:36,339 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 4143 transitions. [2021-08-21 11:02:36,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4143 transitions. [2021-08-21 11:02:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:02:36,342 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:36,342 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:36,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:02:36,342 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash -295330536, now seen corresponding path program 1 times [2021-08-21 11:02:36,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:36,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473039526] [2021-08-21 11:02:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:36,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:36,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:36,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473039526] [2021-08-21 11:02:36,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473039526] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:36,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119460051] [2021-08-21 11:02:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:36,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:36,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:36,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 11:02:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:36,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-21 11:02:36,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:37,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119460051] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:37,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:37,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-21 11:02:37,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436749723] [2021-08-21 11:02:37,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 11:02:37,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 11:02:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:02:37,014 INFO L87 Difference]: Start difference. First operand 1539 states and 4143 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:37,162 INFO L93 Difference]: Finished difference Result 2651 states and 6900 transitions. [2021-08-21 11:02:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-21 11:02:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:02:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:37,171 INFO L225 Difference]: With dead ends: 2651 [2021-08-21 11:02:37,171 INFO L226 Difference]: Without dead ends: 2171 [2021-08-21 11:02:37,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:02:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-08-21 11:02:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1624. [2021-08-21 11:02:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.654343807763401) internal successors, (4308), 1623 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4308 transitions. [2021-08-21 11:02:37,240 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4308 transitions. Word has length 42 [2021-08-21 11:02:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:37,241 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 4308 transitions. [2021-08-21 11:02:37,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4308 transitions. [2021-08-21 11:02:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:02:37,244 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:37,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:37,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:37,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-21 11:02:37,453 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:37,453 INFO L82 PathProgramCache]: Analyzing trace with hash -443133005, now seen corresponding path program 2 times [2021-08-21 11:02:37,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:37,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164586940] [2021-08-21 11:02:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:37,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:37,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:37,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164586940] [2021-08-21 11:02:37,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164586940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:37,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:37,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:02:37,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402330658] [2021-08-21 11:02:37,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:02:37,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:02:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:02:37,519 INFO L87 Difference]: Start difference. First operand 1624 states and 4308 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:37,621 INFO L93 Difference]: Finished difference Result 2643 states and 6948 transitions. [2021-08-21 11:02:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:02:37,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:02:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:37,630 INFO L225 Difference]: With dead ends: 2643 [2021-08-21 11:02:37,630 INFO L226 Difference]: Without dead ends: 2376 [2021-08-21 11:02:37,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:02:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-08-21 11:02:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1654. [2021-08-21 11:02:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 2.6842105263157894) internal successors, (4437), 1653 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 4437 transitions. [2021-08-21 11:02:37,664 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 4437 transitions. Word has length 42 [2021-08-21 11:02:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:37,664 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 4437 transitions. [2021-08-21 11:02:37,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 4437 transitions. [2021-08-21 11:02:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:02:37,666 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:37,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:37,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:02:37,666 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:37,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1570253327, now seen corresponding path program 3 times [2021-08-21 11:02:37,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:37,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490660637] [2021-08-21 11:02:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:37,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:37,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:37,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490660637] [2021-08-21 11:02:37,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490660637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:02:37,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:02:37,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:02:37,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441901075] [2021-08-21 11:02:37,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:02:37,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:02:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:02:37,747 INFO L87 Difference]: Start difference. First operand 1654 states and 4437 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:37,851 INFO L93 Difference]: Finished difference Result 3064 states and 8060 transitions. [2021-08-21 11:02:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-21 11:02:37,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:02:37,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:37,861 INFO L225 Difference]: With dead ends: 3064 [2021-08-21 11:02:37,861 INFO L226 Difference]: Without dead ends: 2749 [2021-08-21 11:02:37,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 73.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-08-21 11:02:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 1894. [2021-08-21 11:02:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 2.6814580031695723) internal successors, (5076), 1893 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 5076 transitions. [2021-08-21 11:02:37,922 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 5076 transitions. Word has length 42 [2021-08-21 11:02:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:37,922 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 5076 transitions. [2021-08-21 11:02:37,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 5076 transitions. [2021-08-21 11:02:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:02:37,924 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:37,924 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:37,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 11:02:37,925 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1017430236, now seen corresponding path program 2 times [2021-08-21 11:02:37,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:37,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762583871] [2021-08-21 11:02:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:37,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:37,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:37,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762583871] [2021-08-21 11:02:37,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762583871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:37,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048298239] [2021-08-21 11:02:37,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:02:37,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:37,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:37,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:38,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 11:02:38,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:02:38,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:38,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-21 11:02:38,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:38,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048298239] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:38,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:38,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-21 11:02:38,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082931413] [2021-08-21 11:02:38,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 11:02:38,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 11:02:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:02:38,367 INFO L87 Difference]: Start difference. First operand 1894 states and 5076 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:38,505 INFO L93 Difference]: Finished difference Result 3096 states and 8012 transitions. [2021-08-21 11:02:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:02:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:02:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:38,523 INFO L225 Difference]: With dead ends: 3096 [2021-08-21 11:02:38,523 INFO L226 Difference]: Without dead ends: 2616 [2021-08-21 11:02:38,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:02:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-08-21 11:02:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1939. [2021-08-21 11:02:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1938 states have (on average 2.681114551083591) internal successors, (5196), 1938 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 5196 transitions. [2021-08-21 11:02:38,571 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 5196 transitions. Word has length 42 [2021-08-21 11:02:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:38,571 INFO L470 AbstractCegarLoop]: Abstraction has 1939 states and 5196 transitions. [2021-08-21 11:02:38,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 5196 transitions. [2021-08-21 11:02:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:02:38,575 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:38,575 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:38,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:38,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-21 11:02:38,779 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:38,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:38,779 INFO L82 PathProgramCache]: Analyzing trace with hash -357857496, now seen corresponding path program 3 times [2021-08-21 11:02:38,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:38,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788731310] [2021-08-21 11:02:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:38,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:38,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:38,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788731310] [2021-08-21 11:02:38,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788731310] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:38,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399980320] [2021-08-21 11:02:38,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:02:38,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:38,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:38,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:38,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 11:02:38,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-21 11:02:38,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-21 11:02:38,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:39,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399980320] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:39,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:39,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-21 11:02:39,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310533769] [2021-08-21 11:02:39,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 11:02:39,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 11:02:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:02:39,262 INFO L87 Difference]: Start difference. First operand 1939 states and 5196 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:39,437 INFO L93 Difference]: Finished difference Result 3440 states and 9084 transitions. [2021-08-21 11:02:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-21 11:02:39,438 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:02:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:39,445 INFO L225 Difference]: With dead ends: 3440 [2021-08-21 11:02:39,445 INFO L226 Difference]: Without dead ends: 2906 [2021-08-21 11:02:39,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:02:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-08-21 11:02:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2113. [2021-08-21 11:02:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7130681818181817) internal successors, (5730), 2112 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5730 transitions. [2021-08-21 11:02:39,487 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5730 transitions. Word has length 42 [2021-08-21 11:02:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:39,487 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 5730 transitions. [2021-08-21 11:02:39,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5730 transitions. [2021-08-21 11:02:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 11:02:39,490 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:39,490 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:39,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:39,705 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:39,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1295186514, now seen corresponding path program 1 times [2021-08-21 11:02:39,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:39,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003764567] [2021-08-21 11:02:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:39,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:39,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:39,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003764567] [2021-08-21 11:02:39,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003764567] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601427504] [2021-08-21 11:02:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:39,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:39,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:39,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 11:02:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:39,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 11:02:39,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:40,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601427504] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:40,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:40,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-21 11:02:40,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481248558] [2021-08-21 11:02:40,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 11:02:40,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 11:02:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:40,252 INFO L87 Difference]: Start difference. First operand 2113 states and 5730 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:40,394 INFO L93 Difference]: Finished difference Result 3333 states and 8707 transitions. [2021-08-21 11:02:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:02:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-21 11:02:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:40,400 INFO L225 Difference]: With dead ends: 3333 [2021-08-21 11:02:40,400 INFO L226 Difference]: Without dead ends: 2941 [2021-08-21 11:02:40,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:02:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2021-08-21 11:02:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2162. [2021-08-21 11:02:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2161 states have (on average 2.6968995835261453) internal successors, (5828), 2161 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 5828 transitions. [2021-08-21 11:02:40,461 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 5828 transitions. Word has length 47 [2021-08-21 11:02:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:40,461 INFO L470 AbstractCegarLoop]: Abstraction has 2162 states and 5828 transitions. [2021-08-21 11:02:40,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 5828 transitions. [2021-08-21 11:02:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 11:02:40,464 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:40,464 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:40,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:40,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:40,677 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash 555482178, now seen corresponding path program 2 times [2021-08-21 11:02:40,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:40,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300469189] [2021-08-21 11:02:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:40,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:40,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:40,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300469189] [2021-08-21 11:02:40,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300469189] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:40,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72824579] [2021-08-21 11:02:40,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:02:40,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:40,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:40,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-21 11:02:40,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:02:40,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:40,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 11:02:40,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:41,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72824579] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:41,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:41,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-21 11:02:41,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239247073] [2021-08-21 11:02:41,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 11:02:41,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 11:02:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:41,294 INFO L87 Difference]: Start difference. First operand 2162 states and 5828 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:41,448 INFO L93 Difference]: Finished difference Result 3173 states and 8259 transitions. [2021-08-21 11:02:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-21 11:02:41,448 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-21 11:02:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:41,453 INFO L225 Difference]: With dead ends: 3173 [2021-08-21 11:02:41,453 INFO L226 Difference]: Without dead ends: 3021 [2021-08-21 11:02:41,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-08-21 11:02:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-08-21 11:02:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2196. [2021-08-21 11:02:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 2.687015945330296) internal successors, (5898), 2195 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5898 transitions. [2021-08-21 11:02:41,489 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5898 transitions. Word has length 47 [2021-08-21 11:02:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:41,489 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5898 transitions. [2021-08-21 11:02:41,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5898 transitions. [2021-08-21 11:02:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 11:02:41,492 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:41,492 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:41,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:41,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-21 11:02:41,713 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:41,713 INFO L82 PathProgramCache]: Analyzing trace with hash -878237628, now seen corresponding path program 3 times [2021-08-21 11:02:41,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:41,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640642730] [2021-08-21 11:02:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:41,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:41,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:41,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640642730] [2021-08-21 11:02:41,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640642730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:41,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939141964] [2021-08-21 11:02:41,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:02:41,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:41,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:41,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:41,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-21 11:02:42,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-21 11:02:42,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:42,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 11:02:42,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:42,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939141964] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:42,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:42,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-21 11:02:42,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590642099] [2021-08-21 11:02:42,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 11:02:42,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 11:02:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:42,310 INFO L87 Difference]: Start difference. First operand 2196 states and 5898 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:42,493 INFO L93 Difference]: Finished difference Result 3597 states and 9235 transitions. [2021-08-21 11:02:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-21 11:02:42,493 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-21 11:02:42,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:42,500 INFO L225 Difference]: With dead ends: 3597 [2021-08-21 11:02:42,500 INFO L226 Difference]: Without dead ends: 3205 [2021-08-21 11:02:42,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-08-21 11:02:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states. [2021-08-21 11:02:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 2196. [2021-08-21 11:02:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 2.687015945330296) internal successors, (5898), 2195 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5898 transitions. [2021-08-21 11:02:42,541 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5898 transitions. Word has length 47 [2021-08-21 11:02:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:42,541 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5898 transitions. [2021-08-21 11:02:42,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5898 transitions. [2021-08-21 11:02:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 11:02:42,544 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:42,544 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:42,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:42,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:42,765 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:42,765 INFO L82 PathProgramCache]: Analyzing trace with hash -310108718, now seen corresponding path program 4 times [2021-08-21 11:02:42,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:42,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063965497] [2021-08-21 11:02:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:42,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:42,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:42,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063965497] [2021-08-21 11:02:42,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063965497] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:42,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219228601] [2021-08-21 11:02:42,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:02:42,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:42,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:42,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:42,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-21 11:02:43,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:02:43,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:43,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 11:02:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:43,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219228601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:43,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:43,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-21 11:02:43,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792314342] [2021-08-21 11:02:43,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 11:02:43,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 11:02:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:43,431 INFO L87 Difference]: Start difference. First operand 2196 states and 5898 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:43,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:43,711 INFO L93 Difference]: Finished difference Result 4391 states and 11500 transitions. [2021-08-21 11:02:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 11:02:43,712 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-21 11:02:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:43,720 INFO L225 Difference]: With dead ends: 4391 [2021-08-21 11:02:43,720 INFO L226 Difference]: Without dead ends: 3833 [2021-08-21 11:02:43,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 227.2ms TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-08-21 11:02:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-08-21 11:02:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2235. [2021-08-21 11:02:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2234 states have (on average 2.6965085049239033) internal successors, (6024), 2234 states have internal predecessors, (6024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 6024 transitions. [2021-08-21 11:02:43,759 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 6024 transitions. Word has length 47 [2021-08-21 11:02:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:43,759 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 6024 transitions. [2021-08-21 11:02:43,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 6024 transitions. [2021-08-21 11:02:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 11:02:43,762 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:43,763 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:43,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:43,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:43,992 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -560647176, now seen corresponding path program 5 times [2021-08-21 11:02:43,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:43,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422966677] [2021-08-21 11:02:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:43,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:44,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:44,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422966677] [2021-08-21 11:02:44,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422966677] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:44,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748376441] [2021-08-21 11:02:44,060 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:02:44,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:44,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:44,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:44,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-21 11:02:44,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:02:44,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:44,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 11:02:44,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:44,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748376441] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:44,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:44,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-21 11:02:44,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991405536] [2021-08-21 11:02:44,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 11:02:44,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 11:02:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:44,643 INFO L87 Difference]: Start difference. First operand 2235 states and 6024 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:44,904 INFO L93 Difference]: Finished difference Result 4350 states and 11284 transitions. [2021-08-21 11:02:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:02:44,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-21 11:02:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:44,913 INFO L225 Difference]: With dead ends: 4350 [2021-08-21 11:02:44,913 INFO L226 Difference]: Without dead ends: 3958 [2021-08-21 11:02:44,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 206.4ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-08-21 11:02:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2021-08-21 11:02:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 2423. [2021-08-21 11:02:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 2.7345169281585466) internal successors, (6623), 2422 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-08-21 11:02:44,954 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-08-21 11:02:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:44,954 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-08-21 11:02:44,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-08-21 11:02:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 11:02:44,957 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:44,957 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:44,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:45,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-21 11:02:45,165 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash 98925564, now seen corresponding path program 6 times [2021-08-21 11:02:45,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:45,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654300022] [2021-08-21 11:02:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:45,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:45,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:45,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654300022] [2021-08-21 11:02:45,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654300022] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:45,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365071921] [2021-08-21 11:02:45,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:02:45,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:45,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:45,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:45,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-21 11:02:45,592 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-08-21 11:02:45,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:45,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 11:02:45,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:45,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365071921] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:45,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:45,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-21 11:02:45,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432549153] [2021-08-21 11:02:45,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 11:02:45,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 11:02:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:02:45,929 INFO L87 Difference]: Start difference. First operand 2423 states and 6623 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:46,460 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-08-21 11:02:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:02:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-21 11:02:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:46,469 INFO L225 Difference]: With dead ends: 5771 [2021-08-21 11:02:46,469 INFO L226 Difference]: Without dead ends: 4898 [2021-08-21 11:02:46,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 439.3ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 11:02:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-08-21 11:02:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-08-21 11:02:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2816 states have (on average 2.7169744318181817) internal successors, (7651), 2816 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-08-21 11:02:46,519 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-08-21 11:02:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:46,519 INFO L470 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-08-21 11:02:46,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-08-21 11:02:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:46,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:46,523 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:46,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-21 11:02:46,741 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:46,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1391018205, now seen corresponding path program 7 times [2021-08-21 11:02:46,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:46,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035303724] [2021-08-21 11:02:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:46,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:46,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:46,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035303724] [2021-08-21 11:02:46,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035303724] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:46,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473345024] [2021-08-21 11:02:46,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:02:46,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:46,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:46,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-21 11:02:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:47,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:47,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:47,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473345024] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:47,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:47,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-21 11:02:47,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592924425] [2021-08-21 11:02:47,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 11:02:47,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 11:02:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-08-21 11:02:47,587 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:47,851 INFO L93 Difference]: Finished difference Result 4391 states and 11330 transitions. [2021-08-21 11:02:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:02:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:47,863 INFO L225 Difference]: With dead ends: 4391 [2021-08-21 11:02:47,863 INFO L226 Difference]: Without dead ends: 3999 [2021-08-21 11:02:47,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 215.2ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-08-21 11:02:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2021-08-21 11:02:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 2932. [2021-08-21 11:02:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2931 states have (on average 2.6939611054247696) internal successors, (7896), 2931 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 7896 transitions. [2021-08-21 11:02:47,909 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 7896 transitions. Word has length 52 [2021-08-21 11:02:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:47,909 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 7896 transitions. [2021-08-21 11:02:47,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 7896 transitions. [2021-08-21 11:02:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:47,916 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:47,917 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:47,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:48,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-21 11:02:48,134 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:48,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1042815767, now seen corresponding path program 1 times [2021-08-21 11:02:48,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:48,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286849026] [2021-08-21 11:02:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:48,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:48,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:48,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286849026] [2021-08-21 11:02:48,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286849026] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:48,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744327415] [2021-08-21 11:02:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:48,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:48,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:48,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-21 11:02:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:48,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:48,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:48,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744327415] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:48,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:48,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-08-21 11:02:48,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137983581] [2021-08-21 11:02:48,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 11:02:48,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:48,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 11:02:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-21 11:02:48,961 INFO L87 Difference]: Start difference. First operand 2932 states and 7896 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:49,148 INFO L93 Difference]: Finished difference Result 4087 states and 10594 transitions. [2021-08-21 11:02:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:02:49,149 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:49,154 INFO L225 Difference]: With dead ends: 4087 [2021-08-21 11:02:49,154 INFO L226 Difference]: Without dead ends: 3935 [2021-08-21 11:02:49,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 199.2ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:02:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-08-21 11:02:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2982. [2021-08-21 11:02:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2981 states have (on average 2.6856759476685674) internal successors, (8006), 2981 states have internal predecessors, (8006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 8006 transitions. [2021-08-21 11:02:49,194 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 8006 transitions. Word has length 52 [2021-08-21 11:02:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:49,194 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 8006 transitions. [2021-08-21 11:02:49,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 8006 transitions. [2021-08-21 11:02:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:49,198 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:49,198 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:49,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:49,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-21 11:02:49,413 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1516143985, now seen corresponding path program 2 times [2021-08-21 11:02:49,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:49,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443847909] [2021-08-21 11:02:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:49,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:49,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:49,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443847909] [2021-08-21 11:02:49,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443847909] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:49,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994851014] [2021-08-21 11:02:49,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:02:49,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:49,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:49,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-21 11:02:49,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:02:49,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:49,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:49,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994851014] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:50,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:50,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-08-21 11:02:50,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706830578] [2021-08-21 11:02:50,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 11:02:50,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 11:02:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-21 11:02:50,341 INFO L87 Difference]: Start difference. First operand 2982 states and 8006 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:50,494 INFO L93 Difference]: Finished difference Result 3927 states and 10274 transitions. [2021-08-21 11:02:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-21 11:02:50,494 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:50,499 INFO L225 Difference]: With dead ends: 3927 [2021-08-21 11:02:50,500 INFO L226 Difference]: Without dead ends: 3775 [2021-08-21 11:02:50,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 189.4ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:02:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-08-21 11:02:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 2981. [2021-08-21 11:02:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2980 states have (on average 2.684228187919463) internal successors, (7999), 2980 states have internal predecessors, (7999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 7999 transitions. [2021-08-21 11:02:50,542 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 7999 transitions. Word has length 52 [2021-08-21 11:02:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:50,542 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 7999 transitions. [2021-08-21 11:02:50,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 7999 transitions. [2021-08-21 11:02:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:50,545 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:50,545 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:50,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:50,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:50,755 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:50,755 INFO L82 PathProgramCache]: Analyzing trace with hash 288934477, now seen corresponding path program 8 times [2021-08-21 11:02:50,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:50,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355963095] [2021-08-21 11:02:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:50,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:50,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:50,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355963095] [2021-08-21 11:02:50,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355963095] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:50,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748389203] [2021-08-21 11:02:50,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:02:50,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:50,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:50,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-21 11:02:51,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:02:51,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:51,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:51,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:51,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748389203] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:51,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:51,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-21 11:02:51,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467591813] [2021-08-21 11:02:51,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 11:02:51,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 11:02:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-08-21 11:02:51,657 INFO L87 Difference]: Start difference. First operand 2981 states and 7999 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:51,922 INFO L93 Difference]: Finished difference Result 4796 states and 12155 transitions. [2021-08-21 11:02:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 11:02:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:51,928 INFO L225 Difference]: With dead ends: 4796 [2021-08-21 11:02:51,928 INFO L226 Difference]: Without dead ends: 4404 [2021-08-21 11:02:51,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 241.6ms TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2021-08-21 11:02:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2021-08-21 11:02:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 2956. [2021-08-21 11:02:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2955 states have (on average 2.688324873096447) internal successors, (7944), 2955 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 7944 transitions. [2021-08-21 11:02:51,966 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 7944 transitions. Word has length 52 [2021-08-21 11:02:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:51,966 INFO L470 AbstractCegarLoop]: Abstraction has 2956 states and 7944 transitions. [2021-08-21 11:02:51,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 7944 transitions. [2021-08-21 11:02:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:51,969 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:51,970 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:51,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:52,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-08-21 11:02:52,185 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:52,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1432623815, now seen corresponding path program 9 times [2021-08-21 11:02:52,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:52,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429887693] [2021-08-21 11:02:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:52,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:52,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:52,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429887693] [2021-08-21 11:02:52,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429887693] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:52,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578224488] [2021-08-21 11:02:52,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:02:52,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:52,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:52,263 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:52,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-21 11:02:52,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 11:02:52,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:53,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578224488] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:53,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:53,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-21 11:02:53,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700795226] [2021-08-21 11:02:53,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 11:02:53,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:53,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 11:02:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-08-21 11:02:53,111 INFO L87 Difference]: Start difference. First operand 2956 states and 7944 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:53,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:53,452 INFO L93 Difference]: Finished difference Result 5543 states and 14338 transitions. [2021-08-21 11:02:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:02:53,452 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:53,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:53,459 INFO L225 Difference]: With dead ends: 5543 [2021-08-21 11:02:53,459 INFO L226 Difference]: Without dead ends: 5063 [2021-08-21 11:02:53,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 321.4ms TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:02:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2021-08-21 11:02:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 3250. [2021-08-21 11:02:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 3249 states have (on average 2.7331486611265006) internal successors, (8880), 3249 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 8880 transitions. [2021-08-21 11:02:53,507 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 8880 transitions. Word has length 52 [2021-08-21 11:02:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:53,507 INFO L470 AbstractCegarLoop]: Abstraction has 3250 states and 8880 transitions. [2021-08-21 11:02:53,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 8880 transitions. [2021-08-21 11:02:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:53,511 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:53,511 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:53,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:53,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:53,729 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash -773051075, now seen corresponding path program 10 times [2021-08-21 11:02:53,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:53,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855363670] [2021-08-21 11:02:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:53,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:53,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:53,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855363670] [2021-08-21 11:02:53,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855363670] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:53,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132834813] [2021-08-21 11:02:53,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:02:53,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:53,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:53,813 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:53,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-21 11:02:54,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:02:54,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:54,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:54,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:54,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132834813] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:54,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:54,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-21 11:02:54,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607105412] [2021-08-21 11:02:54,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 11:02:54,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 11:02:54,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-08-21 11:02:54,718 INFO L87 Difference]: Start difference. First operand 3250 states and 8880 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:55,354 INFO L93 Difference]: Finished difference Result 6631 states and 17538 transitions. [2021-08-21 11:02:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 11:02:55,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:55,361 INFO L225 Difference]: With dead ends: 6631 [2021-08-21 11:02:55,362 INFO L226 Difference]: Without dead ends: 5691 [2021-08-21 11:02:55,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 557.5ms TimeCoverageRelationStatistics Valid=536, Invalid=1914, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 11:02:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2021-08-21 11:02:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 3302. [2021-08-21 11:02:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 3301 states have (on average 2.7197818842774915) internal successors, (8978), 3301 states have internal predecessors, (8978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 8978 transitions. [2021-08-21 11:02:55,410 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 8978 transitions. Word has length 52 [2021-08-21 11:02:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:55,410 INFO L470 AbstractCegarLoop]: Abstraction has 3302 states and 8978 transitions. [2021-08-21 11:02:55,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 8978 transitions. [2021-08-21 11:02:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:55,413 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:55,413 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:55,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:55,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:55,615 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:55,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:55,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2127839103, now seen corresponding path program 3 times [2021-08-21 11:02:55,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:55,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816738220] [2021-08-21 11:02:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:55,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:55,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:55,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816738220] [2021-08-21 11:02:55,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816738220] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:55,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042438258] [2021-08-21 11:02:55,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:02:55,701 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:55,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:55,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-21 11:02:56,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 11:02:56,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:56,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:56,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042438258] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:56,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:56,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-08-21 11:02:56,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535769560] [2021-08-21 11:02:56,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 11:02:56,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 11:02:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-08-21 11:02:56,592 INFO L87 Difference]: Start difference. First operand 3302 states and 8978 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:56,888 INFO L93 Difference]: Finished difference Result 5165 states and 13423 transitions. [2021-08-21 11:02:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:02:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:56,913 INFO L225 Difference]: With dead ends: 5165 [2021-08-21 11:02:56,914 INFO L226 Difference]: Without dead ends: 5013 [2021-08-21 11:02:56,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 265.4ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-08-21 11:02:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-08-21 11:02:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 3472. [2021-08-21 11:02:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 2.746182656295016) internal successors, (9532), 3471 states have internal predecessors, (9532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 9532 transitions. [2021-08-21 11:02:56,954 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 9532 transitions. Word has length 52 [2021-08-21 11:02:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:56,954 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 9532 transitions. [2021-08-21 11:02:56,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 9532 transitions. [2021-08-21 11:02:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:56,957 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:56,957 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:56,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:57,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-21 11:02:57,158 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:57,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:57,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1001785285, now seen corresponding path program 4 times [2021-08-21 11:02:57,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:57,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304529230] [2021-08-21 11:02:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:57,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:57,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:57,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304529230] [2021-08-21 11:02:57,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304529230] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:57,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384566234] [2021-08-21 11:02:57,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:02:57,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:57,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:57,236 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:57,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-21 11:02:57,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:02:57,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:57,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:57,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:58,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384566234] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:58,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:58,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-08-21 11:02:58,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663218472] [2021-08-21 11:02:58,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 11:02:58,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:58,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 11:02:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-08-21 11:02:58,173 INFO L87 Difference]: Start difference. First operand 3472 states and 9532 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:02:58,509 INFO L93 Difference]: Finished difference Result 5629 states and 14961 transitions. [2021-08-21 11:02:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:02:58,509 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:02:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:02:58,516 INFO L225 Difference]: With dead ends: 5629 [2021-08-21 11:02:58,516 INFO L226 Difference]: Without dead ends: 5477 [2021-08-21 11:02:58,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 297.3ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:02:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-08-21 11:02:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 3560. [2021-08-21 11:02:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 2.766226468109019) internal successors, (9845), 3559 states have internal predecessors, (9845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 9845 transitions. [2021-08-21 11:02:58,568 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 9845 transitions. Word has length 52 [2021-08-21 11:02:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:02:58,568 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 9845 transitions. [2021-08-21 11:02:58,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:02:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 9845 transitions. [2021-08-21 11:02:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 11:02:58,572 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:02:58,572 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:02:58,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-21 11:02:58,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:58,778 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:02:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:02:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1661358025, now seen corresponding path program 5 times [2021-08-21 11:02:58,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:02:58,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234408001] [2021-08-21 11:02:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:02:58,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:02:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:02:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:58,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:02:58,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234408001] [2021-08-21 11:02:58,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234408001] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:58,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131343469] [2021-08-21 11:02:58,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:02:58,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:02:58,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:02:58,860 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:02:58,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-21 11:02:59,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-21 11:02:59,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:02:59,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 11:02:59,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:02:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:02:59,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131343469] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:02:59,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:02:59,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-08-21 11:02:59,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525488867] [2021-08-21 11:02:59,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 11:02:59,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:02:59,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 11:02:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-08-21 11:02:59,821 INFO L87 Difference]: Start difference. First operand 3560 states and 9845 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:00,359 INFO L93 Difference]: Finished difference Result 6909 states and 18691 transitions. [2021-08-21 11:03:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:03:00,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 11:03:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:00,369 INFO L225 Difference]: With dead ends: 6909 [2021-08-21 11:03:00,369 INFO L226 Difference]: Without dead ends: 6479 [2021-08-21 11:03:00,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 468.4ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:03:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2021-08-21 11:03:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 3764. [2021-08-21 11:03:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 2.766941270263088) internal successors, (10412), 3763 states have internal predecessors, (10412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 10412 transitions. [2021-08-21 11:03:00,431 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 10412 transitions. Word has length 52 [2021-08-21 11:03:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:00,431 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 10412 transitions. [2021-08-21 11:03:00,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 10412 transitions. [2021-08-21 11:03:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:00,436 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:00,436 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:00,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:00,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:00,648 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:00,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:00,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1423398322, now seen corresponding path program 11 times [2021-08-21 11:03:00,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:00,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724938527] [2021-08-21 11:03:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:00,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:00,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:00,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724938527] [2021-08-21 11:03:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724938527] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:00,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199676396] [2021-08-21 11:03:00,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:03:00,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:00,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:00,744 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:00,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-21 11:03:01,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:03:01,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:01,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:01,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:01,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199676396] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:01,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:01,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:01,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934772912] [2021-08-21 11:03:01,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:01,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:01,817 INFO L87 Difference]: Start difference. First operand 3764 states and 10412 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:01,977 INFO L93 Difference]: Finished difference Result 5044 states and 13383 transitions. [2021-08-21 11:03:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 11:03:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:01,984 INFO L225 Difference]: With dead ends: 5044 [2021-08-21 11:03:01,984 INFO L226 Difference]: Without dead ends: 4892 [2021-08-21 11:03:01,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-08-21 11:03:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2021-08-21 11:03:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 3839. [2021-08-21 11:03:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3838 states have (on average 2.755862428348098) internal successors, (10577), 3838 states have internal predecessors, (10577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 10577 transitions. [2021-08-21 11:03:02,031 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 10577 transitions. Word has length 57 [2021-08-21 11:03:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:02,031 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 10577 transitions. [2021-08-21 11:03:02,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 10577 transitions. [2021-08-21 11:03:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:02,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:02,036 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:02,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:02,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:02,236 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:02,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:02,237 INFO L82 PathProgramCache]: Analyzing trace with hash 427270370, now seen corresponding path program 12 times [2021-08-21 11:03:02,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:02,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706700754] [2021-08-21 11:03:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:02,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:02,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:02,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706700754] [2021-08-21 11:03:02,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706700754] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:02,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312507471] [2021-08-21 11:03:02,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:03:02,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:02,353 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:02,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-21 11:03:03,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:03:03,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:03,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312507471] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:03,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:03,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163665943] [2021-08-21 11:03:03,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:03,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:03,686 INFO L87 Difference]: Start difference. First operand 3839 states and 10577 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:03,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:03,913 INFO L93 Difference]: Finished difference Result 5180 states and 13655 transitions. [2021-08-21 11:03:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:03:03,913 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:03,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:03,920 INFO L225 Difference]: With dead ends: 5180 [2021-08-21 11:03:03,920 INFO L226 Difference]: Without dead ends: 5028 [2021-08-21 11:03:03,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 223.7ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-08-21 11:03:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-08-21 11:03:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 3839. [2021-08-21 11:03:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3838 states have (on average 2.755862428348098) internal successors, (10577), 3838 states have internal predecessors, (10577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 10577 transitions. [2021-08-21 11:03:03,983 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 10577 transitions. Word has length 57 [2021-08-21 11:03:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:03,984 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 10577 transitions. [2021-08-21 11:03:03,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 10577 transitions. [2021-08-21 11:03:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:03,988 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:03,988 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:04,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:04,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-21 11:03:04,201 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:04,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1433862954, now seen corresponding path program 6 times [2021-08-21 11:03:04,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:04,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414401081] [2021-08-21 11:03:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:04,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:04,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:04,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414401081] [2021-08-21 11:03:04,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414401081] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:04,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803166778] [2021-08-21 11:03:04,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:03:04,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:04,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:04,300 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:04,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-21 11:03:05,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-08-21 11:03:05,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:05,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:05,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803166778] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:05,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:05,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:05,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857352121] [2021-08-21 11:03:05,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:05,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:05,478 INFO L87 Difference]: Start difference. First operand 3839 states and 10577 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:05,730 INFO L93 Difference]: Finished difference Result 5324 states and 13943 transitions. [2021-08-21 11:03:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:03:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:05,738 INFO L225 Difference]: With dead ends: 5324 [2021-08-21 11:03:05,738 INFO L226 Difference]: Without dead ends: 5172 [2021-08-21 11:03:05,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 278.8ms TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-08-21 11:03:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2021-08-21 11:03:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 3904. [2021-08-21 11:03:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3903 states have (on average 2.74583653599795) internal successors, (10717), 3903 states have internal predecessors, (10717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 10717 transitions. [2021-08-21 11:03:05,785 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 10717 transitions. Word has length 57 [2021-08-21 11:03:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:05,785 INFO L470 AbstractCegarLoop]: Abstraction has 3904 states and 10717 transitions. [2021-08-21 11:03:05,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 10717 transitions. [2021-08-21 11:03:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:05,790 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:05,790 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:05,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:05,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-21 11:03:05,999 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:05,999 INFO L82 PathProgramCache]: Analyzing trace with hash -960534736, now seen corresponding path program 7 times [2021-08-21 11:03:05,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:05,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311193008] [2021-08-21 11:03:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:05,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:06,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:06,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311193008] [2021-08-21 11:03:06,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311193008] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:06,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100583064] [2021-08-21 11:03:06,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:03:06,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:06,098 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:06,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-21 11:03:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:06,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:07,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100583064] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:07,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:07,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:07,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597328664] [2021-08-21 11:03:07,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:07,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:07,403 INFO L87 Difference]: Start difference. First operand 3904 states and 10717 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:07,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:07,621 INFO L93 Difference]: Finished difference Result 5195 states and 13680 transitions. [2021-08-21 11:03:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-21 11:03:07,621 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:07,628 INFO L225 Difference]: With dead ends: 5195 [2021-08-21 11:03:07,628 INFO L226 Difference]: Without dead ends: 5043 [2021-08-21 11:03:07,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 244.7ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-08-21 11:03:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2021-08-21 11:03:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 3869. [2021-08-21 11:03:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 2.750775594622544) internal successors, (10640), 3868 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 10640 transitions. [2021-08-21 11:03:07,674 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 10640 transitions. Word has length 57 [2021-08-21 11:03:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:07,674 INFO L470 AbstractCegarLoop]: Abstraction has 3869 states and 10640 transitions. [2021-08-21 11:03:07,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 10640 transitions. [2021-08-21 11:03:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:07,678 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:07,679 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:07,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-08-21 11:03:07,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-21 11:03:07,894 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash 91683170, now seen corresponding path program 8 times [2021-08-21 11:03:07,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:07,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384020981] [2021-08-21 11:03:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:07,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:07,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:07,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384020981] [2021-08-21 11:03:07,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384020981] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:07,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258236271] [2021-08-21 11:03:07,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:03:07,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:07,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:07,985 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:07,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-21 11:03:08,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:03:08,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:08,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:08,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:09,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258236271] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:09,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:09,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:09,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561174088] [2021-08-21 11:03:09,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:09,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:09,268 INFO L87 Difference]: Start difference. First operand 3869 states and 10640 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:09,545 INFO L93 Difference]: Finished difference Result 5377 states and 14042 transitions. [2021-08-21 11:03:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:03:09,545 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:09,552 INFO L225 Difference]: With dead ends: 5377 [2021-08-21 11:03:09,552 INFO L226 Difference]: Without dead ends: 5225 [2021-08-21 11:03:09,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 294.9ms TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:03:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2021-08-21 11:03:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 3974. [2021-08-21 11:03:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3973 states have (on average 2.7362194815001257) internal successors, (10871), 3973 states have internal predecessors, (10871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10871 transitions. [2021-08-21 11:03:09,602 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10871 transitions. Word has length 57 [2021-08-21 11:03:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:09,603 INFO L470 AbstractCegarLoop]: Abstraction has 3974 states and 10871 transitions. [2021-08-21 11:03:09,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10871 transitions. [2021-08-21 11:03:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:09,607 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:09,607 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:09,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:09,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:09,808 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1953651878, now seen corresponding path program 9 times [2021-08-21 11:03:09,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:09,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216427169] [2021-08-21 11:03:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:09,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:09,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:09,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216427169] [2021-08-21 11:03:09,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216427169] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:09,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158028718] [2021-08-21 11:03:09,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:03:09,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:09,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:09,901 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:09,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-21 11:03:10,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 11:03:10,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:10,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:10,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:11,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158028718] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:11,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:11,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:11,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851534195] [2021-08-21 11:03:11,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:11,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:11,254 INFO L87 Difference]: Start difference. First operand 3974 states and 10871 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:11,564 INFO L93 Difference]: Finished difference Result 5481 states and 14250 transitions. [2021-08-21 11:03:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:03:11,564 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:11,571 INFO L225 Difference]: With dead ends: 5481 [2021-08-21 11:03:11,571 INFO L226 Difference]: Without dead ends: 5329 [2021-08-21 11:03:11,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 339.8ms TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2021-08-21 11:03:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2021-08-21 11:03:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 3943. [2021-08-21 11:03:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3942 states have (on average 2.73921867072552) internal successors, (10798), 3942 states have internal predecessors, (10798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 10798 transitions. [2021-08-21 11:03:11,620 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 10798 transitions. Word has length 57 [2021-08-21 11:03:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:11,620 INFO L470 AbstractCegarLoop]: Abstraction has 3943 states and 10798 transitions. [2021-08-21 11:03:11,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 10798 transitions. [2021-08-21 11:03:11,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:11,625 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:11,625 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:11,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:11,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:11,827 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash -284017324, now seen corresponding path program 10 times [2021-08-21 11:03:11,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:11,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390801465] [2021-08-21 11:03:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:11,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:11,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:11,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390801465] [2021-08-21 11:03:11,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390801465] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:11,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787447958] [2021-08-21 11:03:11,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:03:11,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:11,949 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:11,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-21 11:03:12,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:03:12,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:12,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:12,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:13,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787447958] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:13,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:13,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:13,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523236031] [2021-08-21 11:03:13,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:13,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:13,302 INFO L87 Difference]: Start difference. First operand 3943 states and 10798 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:13,640 INFO L93 Difference]: Finished difference Result 5465 states and 14218 transitions. [2021-08-21 11:03:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 11:03:13,640 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:13,647 INFO L225 Difference]: With dead ends: 5465 [2021-08-21 11:03:13,647 INFO L226 Difference]: Without dead ends: 5313 [2021-08-21 11:03:13,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 344.4ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-08-21 11:03:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2021-08-21 11:03:13,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 3903. [2021-08-21 11:03:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.744746283956945) internal successors, (10710), 3902 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10710 transitions. [2021-08-21 11:03:13,694 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10710 transitions. Word has length 57 [2021-08-21 11:03:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:13,694 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 10710 transitions. [2021-08-21 11:03:13,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10710 transitions. [2021-08-21 11:03:13,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:13,699 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:13,699 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:13,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-08-21 11:03:13,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-08-21 11:03:13,911 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:13,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1723791004, now seen corresponding path program 13 times [2021-08-21 11:03:13,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:13,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946431139] [2021-08-21 11:03:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:13,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:13,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:13,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946431139] [2021-08-21 11:03:13,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946431139] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:13,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480602369] [2021-08-21 11:03:13,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:03:13,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:13,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:14,001 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:14,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-21 11:03:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:15,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480602369] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:15,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:15,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:15,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625079761] [2021-08-21 11:03:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:15,369 INFO L87 Difference]: Start difference. First operand 3903 states and 10710 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:15,544 INFO L93 Difference]: Finished difference Result 5284 states and 13871 transitions. [2021-08-21 11:03:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 11:03:15,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:15,552 INFO L225 Difference]: With dead ends: 5284 [2021-08-21 11:03:15,552 INFO L226 Difference]: Without dead ends: 5132 [2021-08-21 11:03:15,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:03:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2021-08-21 11:03:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 3953. [2021-08-21 11:03:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7378542510121457) internal successors, (10820), 3952 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10820 transitions. [2021-08-21 11:03:15,605 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10820 transitions. Word has length 57 [2021-08-21 11:03:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:15,605 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 10820 transitions. [2021-08-21 11:03:15,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10820 transitions. [2021-08-21 11:03:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:15,609 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:15,609 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:15,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:15,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-21 11:03:15,813 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash 126877688, now seen corresponding path program 14 times [2021-08-21 11:03:15,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:15,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818942667] [2021-08-21 11:03:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:15,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:16,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:16,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818942667] [2021-08-21 11:03:16,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818942667] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:16,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119410835] [2021-08-21 11:03:16,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:03:16,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:16,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:16,035 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:16,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-21 11:03:17,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:03:17,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:17,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:17,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:17,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119410835] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:17,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:17,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:17,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105444108] [2021-08-21 11:03:17,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:17,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:17,437 INFO L87 Difference]: Start difference. First operand 3953 states and 10820 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:17,650 INFO L93 Difference]: Finished difference Result 5525 states and 14358 transitions. [2021-08-21 11:03:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-21 11:03:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:17,658 INFO L225 Difference]: With dead ends: 5525 [2021-08-21 11:03:17,658 INFO L226 Difference]: Without dead ends: 5373 [2021-08-21 11:03:17,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 242.7ms TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2021-08-21 11:03:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2021-08-21 11:03:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 3953. [2021-08-21 11:03:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7378542510121457) internal successors, (10820), 3952 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10820 transitions. [2021-08-21 11:03:17,709 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10820 transitions. Word has length 57 [2021-08-21 11:03:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 10820 transitions. [2021-08-21 11:03:17,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10820 transitions. [2021-08-21 11:03:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:17,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:17,713 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:17,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-08-21 11:03:17,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:17,926 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:17,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:17,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1734255636, now seen corresponding path program 11 times [2021-08-21 11:03:17,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:17,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419789990] [2021-08-21 11:03:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:17,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:18,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:18,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419789990] [2021-08-21 11:03:18,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419789990] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:18,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450684567] [2021-08-21 11:03:18,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:03:18,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:18,039 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:18,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-21 11:03:19,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-21 11:03:19,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:19,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:19,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:19,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450684567] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:19,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:19,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:19,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408042549] [2021-08-21 11:03:19,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:19,459 INFO L87 Difference]: Start difference. First operand 3953 states and 10820 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:19,737 INFO L93 Difference]: Finished difference Result 5660 states and 14623 transitions. [2021-08-21 11:03:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:03:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:19,744 INFO L225 Difference]: With dead ends: 5660 [2021-08-21 11:03:19,744 INFO L226 Difference]: Without dead ends: 5508 [2021-08-21 11:03:19,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 291.4ms TimeCoverageRelationStatistics Valid=279, Invalid=777, Unknown=0, NotChecked=0, Total=1056 [2021-08-21 11:03:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-08-21 11:03:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3953. [2021-08-21 11:03:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7378542510121457) internal successors, (10820), 3952 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10820 transitions. [2021-08-21 11:03:19,793 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10820 transitions. Word has length 57 [2021-08-21 11:03:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:19,793 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 10820 transitions. [2021-08-21 11:03:19,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10820 transitions. [2021-08-21 11:03:19,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:19,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:19,797 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:19,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:19,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:19,998 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:19,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1260927418, now seen corresponding path program 12 times [2021-08-21 11:03:19,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:19,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710621444] [2021-08-21 11:03:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:19,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:20,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:20,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710621444] [2021-08-21 11:03:20,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710621444] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:20,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918125274] [2021-08-21 11:03:20,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:03:20,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:20,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:20,083 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:20,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-21 11:03:21,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:03:21,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:21,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:21,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:21,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918125274] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:21,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:21,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:21,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103919339] [2021-08-21 11:03:21,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:21,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:21,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:21,626 INFO L87 Difference]: Start difference. First operand 3953 states and 10820 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:21,922 INFO L93 Difference]: Finished difference Result 5465 states and 14218 transitions. [2021-08-21 11:03:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 11:03:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:21,929 INFO L225 Difference]: With dead ends: 5465 [2021-08-21 11:03:21,929 INFO L226 Difference]: Without dead ends: 5313 [2021-08-21 11:03:21,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 274.1ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-08-21 11:03:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2021-08-21 11:03:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 3878. [2021-08-21 11:03:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7482589631158114) internal successors, (10655), 3877 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10655 transitions. [2021-08-21 11:03:21,985 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10655 transitions. Word has length 57 [2021-08-21 11:03:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:21,985 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10655 transitions. [2021-08-21 11:03:21,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10655 transitions. [2021-08-21 11:03:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:21,989 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:21,989 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:22,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:22,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:22,203 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:22,203 INFO L82 PathProgramCache]: Analyzing trace with hash -480984296, now seen corresponding path program 15 times [2021-08-21 11:03:22,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:22,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141430392] [2021-08-21 11:03:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:22,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:22,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:22,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141430392] [2021-08-21 11:03:22,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141430392] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:22,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784503168] [2021-08-21 11:03:22,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:03:22,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:22,301 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:22,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-21 11:03:23,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:03:23,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:23,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:23,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784503168] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:23,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:23,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:23,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237366102] [2021-08-21 11:03:23,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:23,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:23,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:23,811 INFO L87 Difference]: Start difference. First operand 3878 states and 10655 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:24,011 INFO L93 Difference]: Finished difference Result 5289 states and 13896 transitions. [2021-08-21 11:03:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-21 11:03:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:24,018 INFO L225 Difference]: With dead ends: 5289 [2021-08-21 11:03:24,018 INFO L226 Difference]: Without dead ends: 5137 [2021-08-21 11:03:24,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 213.0ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-08-21 11:03:24,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2021-08-21 11:03:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 3903. [2021-08-21 11:03:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.744746283956945) internal successors, (10710), 3902 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10710 transitions. [2021-08-21 11:03:24,068 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10710 transitions. Word has length 57 [2021-08-21 11:03:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:24,068 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 10710 transitions. [2021-08-21 11:03:24,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10710 transitions. [2021-08-21 11:03:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:24,072 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:24,072 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:24,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-21 11:03:24,281 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1369684396, now seen corresponding path program 16 times [2021-08-21 11:03:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:24,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342225543] [2021-08-21 11:03:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:24,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:24,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:24,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342225543] [2021-08-21 11:03:24,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342225543] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:24,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295209631] [2021-08-21 11:03:24,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:03:24,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:24,369 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:24,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-21 11:03:25,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:03:25,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:25,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:25,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295209631] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:25,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:25,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:25,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928766561] [2021-08-21 11:03:25,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:25,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:25,939 INFO L87 Difference]: Start difference. First operand 3903 states and 10710 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:26,174 INFO L93 Difference]: Finished difference Result 5505 states and 14328 transitions. [2021-08-21 11:03:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:03:26,174 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:26,181 INFO L225 Difference]: With dead ends: 5505 [2021-08-21 11:03:26,182 INFO L226 Difference]: Without dead ends: 5353 [2021-08-21 11:03:26,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-08-21 11:03:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2021-08-21 11:03:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3903. [2021-08-21 11:03:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.744746283956945) internal successors, (10710), 3902 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10710 transitions. [2021-08-21 11:03:26,234 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10710 transitions. Word has length 57 [2021-08-21 11:03:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:26,234 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 10710 transitions. [2021-08-21 11:03:26,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10710 transitions. [2021-08-21 11:03:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:26,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:26,238 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:26,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-08-21 11:03:26,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-21 11:03:26,457 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash -669464348, now seen corresponding path program 17 times [2021-08-21 11:03:26,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:26,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136908090] [2021-08-21 11:03:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:26,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:26,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:26,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136908090] [2021-08-21 11:03:26,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136908090] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:26,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797671903] [2021-08-21 11:03:26,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:03:26,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:26,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:26,562 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:26,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-21 11:03:27,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:03:27,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:28,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797671903] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:28,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:28,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:28,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95418565] [2021-08-21 11:03:28,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:28,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:28,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:28,131 INFO L87 Difference]: Start difference. First operand 3903 states and 10710 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:28,336 INFO L93 Difference]: Finished difference Result 5274 states and 13871 transitions. [2021-08-21 11:03:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-21 11:03:28,337 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:28,343 INFO L225 Difference]: With dead ends: 5274 [2021-08-21 11:03:28,343 INFO L226 Difference]: Without dead ends: 5122 [2021-08-21 11:03:28,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 207.0ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-08-21 11:03:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5122 states. [2021-08-21 11:03:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5122 to 3878. [2021-08-21 11:03:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7482589631158114) internal successors, (10655), 3877 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10655 transitions. [2021-08-21 11:03:28,404 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10655 transitions. Word has length 57 [2021-08-21 11:03:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:28,404 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10655 transitions. [2021-08-21 11:03:28,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10655 transitions. [2021-08-21 11:03:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:28,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:28,408 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:28,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-08-21 11:03:28,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-21 11:03:28,617 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1228455760, now seen corresponding path program 18 times [2021-08-21 11:03:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:28,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704055788] [2021-08-21 11:03:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:28,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:28,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:28,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704055788] [2021-08-21 11:03:28,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704055788] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:28,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503145181] [2021-08-21 11:03:28,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:03:28,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:28,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:28,709 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:28,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-21 11:03:29,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:03:29,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:29,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:29,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:30,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503145181] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:30,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:30,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:30,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074034688] [2021-08-21 11:03:30,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:30,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:30,343 INFO L87 Difference]: Start difference. First operand 3878 states and 10655 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:30,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:30,733 INFO L93 Difference]: Finished difference Result 6869 states and 18363 transitions. [2021-08-21 11:03:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:03:30,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:30,742 INFO L225 Difference]: With dead ends: 6869 [2021-08-21 11:03:30,742 INFO L226 Difference]: Without dead ends: 6487 [2021-08-21 11:03:30,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 364.2ms TimeCoverageRelationStatistics Valid=369, Invalid=1037, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:03:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2021-08-21 11:03:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 3851. [2021-08-21 11:03:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3850 states have (on average 2.7511688311688314) internal successors, (10592), 3850 states have internal predecessors, (10592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 10592 transitions. [2021-08-21 11:03:30,796 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 10592 transitions. Word has length 57 [2021-08-21 11:03:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:30,798 INFO L470 AbstractCegarLoop]: Abstraction has 3851 states and 10592 transitions. [2021-08-21 11:03:30,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 10592 transitions. [2021-08-21 11:03:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:30,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:30,801 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:30,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:31,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-21 11:03:31,004 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -351873896, now seen corresponding path program 19 times [2021-08-21 11:03:31,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:31,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458284278] [2021-08-21 11:03:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:31,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:31,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:31,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458284278] [2021-08-21 11:03:31,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458284278] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:31,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590240528] [2021-08-21 11:03:31,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:03:31,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:31,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:31,117 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:31,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-21 11:03:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:32,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:32,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:32,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590240528] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:32,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:32,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:32,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767167901] [2021-08-21 11:03:32,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:32,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:32,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:32,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:32,800 INFO L87 Difference]: Start difference. First operand 3851 states and 10592 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:33,125 INFO L93 Difference]: Finished difference Result 6208 states and 16499 transitions. [2021-08-21 11:03:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:03:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:33,134 INFO L225 Difference]: With dead ends: 6208 [2021-08-21 11:03:33,134 INFO L226 Difference]: Without dead ends: 6056 [2021-08-21 11:03:33,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 317.9ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-08-21 11:03:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-08-21 11:03:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 4166. [2021-08-21 11:03:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4166 states, 4165 states have (on average 2.7843937575030013) internal successors, (11597), 4165 states have internal predecessors, (11597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 11597 transitions. [2021-08-21 11:03:33,196 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 11597 transitions. Word has length 57 [2021-08-21 11:03:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:33,197 INFO L470 AbstractCegarLoop]: Abstraction has 4166 states and 11597 transitions. [2021-08-21 11:03:33,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 11597 transitions. [2021-08-21 11:03:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:33,201 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:33,201 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:33,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:33,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:33,402 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash 307698844, now seen corresponding path program 20 times [2021-08-21 11:03:33,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:33,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349683190] [2021-08-21 11:03:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:33,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:33,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:33,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349683190] [2021-08-21 11:03:33,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349683190] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:33,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549952780] [2021-08-21 11:03:33,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:03:33,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:33,491 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:33,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-08-21 11:03:34,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:03:34,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:34,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:34,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:35,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549952780] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:35,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:35,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-21 11:03:35,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929340670] [2021-08-21 11:03:35,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:03:35,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:03:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:03:35,231 INFO L87 Difference]: Start difference. First operand 4166 states and 11597 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:35,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:35,843 INFO L93 Difference]: Finished difference Result 7842 states and 21090 transitions. [2021-08-21 11:03:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:03:35,843 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:35,852 INFO L225 Difference]: With dead ends: 7842 [2021-08-21 11:03:35,852 INFO L226 Difference]: Without dead ends: 7281 [2021-08-21 11:03:35,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 535.3ms TimeCoverageRelationStatistics Valid=503, Invalid=1567, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:03:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7281 states. [2021-08-21 11:03:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7281 to 3806. [2021-08-21 11:03:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3805 states have (on average 2.7821287779237847) internal successors, (10586), 3805 states have internal predecessors, (10586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 10586 transitions. [2021-08-21 11:03:35,903 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 10586 transitions. Word has length 57 [2021-08-21 11:03:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:35,903 INFO L470 AbstractCegarLoop]: Abstraction has 3806 states and 10586 transitions. [2021-08-21 11:03:35,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 10586 transitions. [2021-08-21 11:03:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:35,906 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:35,906 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:35,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-08-21 11:03:36,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-08-21 11:03:36,107 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1086378274, now seen corresponding path program 13 times [2021-08-21 11:03:36,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:36,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737246895] [2021-08-21 11:03:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:36,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:36,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:36,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737246895] [2021-08-21 11:03:36,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737246895] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:36,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522482996] [2021-08-21 11:03:36,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:03:36,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:36,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:36,200 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:36,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-08-21 11:03:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:37,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:37,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:37,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522482996] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:37,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:37,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:37,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531593650] [2021-08-21 11:03:37,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:37,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:37,932 INFO L87 Difference]: Start difference. First operand 3806 states and 10586 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:38,329 INFO L93 Difference]: Finished difference Result 6217 states and 16205 transitions. [2021-08-21 11:03:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:03:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:38,338 INFO L225 Difference]: With dead ends: 6217 [2021-08-21 11:03:38,338 INFO L226 Difference]: Without dead ends: 6065 [2021-08-21 11:03:38,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 359.9ms TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:03:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2021-08-21 11:03:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 3901. [2021-08-21 11:03:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3900 states have (on average 2.7925641025641026) internal successors, (10891), 3900 states have internal predecessors, (10891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 10891 transitions. [2021-08-21 11:03:38,391 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 10891 transitions. Word has length 57 [2021-08-21 11:03:38,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:38,391 INFO L470 AbstractCegarLoop]: Abstraction has 3901 states and 10891 transitions. [2021-08-21 11:03:38,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 10891 transitions. [2021-08-21 11:03:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:38,395 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:38,395 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:38,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-08-21 11:03:38,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:38,595 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:38,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2082535204, now seen corresponding path program 14 times [2021-08-21 11:03:38,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:38,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556843237] [2021-08-21 11:03:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:38,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:38,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:38,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556843237] [2021-08-21 11:03:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556843237] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:38,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886509588] [2021-08-21 11:03:38,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:03:38,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:38,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:38,686 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:38,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-08-21 11:03:40,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:03:40,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:40,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:40,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:40,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886509588] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:40,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:40,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:40,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884304054] [2021-08-21 11:03:40,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:40,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:40,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:40,427 INFO L87 Difference]: Start difference. First operand 3901 states and 10891 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:40,811 INFO L93 Difference]: Finished difference Result 6409 states and 17064 transitions. [2021-08-21 11:03:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:03:40,812 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:40,820 INFO L225 Difference]: With dead ends: 6409 [2021-08-21 11:03:40,820 INFO L226 Difference]: Without dead ends: 6257 [2021-08-21 11:03:40,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 355.8ms TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:03:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2021-08-21 11:03:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 4016. [2021-08-21 11:03:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4015 states have (on average 2.8084682440846827) internal successors, (11276), 4015 states have internal predecessors, (11276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 11276 transitions. [2021-08-21 11:03:40,873 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 11276 transitions. Word has length 57 [2021-08-21 11:03:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:40,873 INFO L470 AbstractCegarLoop]: Abstraction has 4016 states and 11276 transitions. [2021-08-21 11:03:40,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 11276 transitions. [2021-08-21 11:03:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:40,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:40,877 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:40,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-08-21 11:03:41,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:41,078 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:41,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1552859352, now seen corresponding path program 15 times [2021-08-21 11:03:41,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:41,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850336184] [2021-08-21 11:03:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:41,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:41,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:41,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850336184] [2021-08-21 11:03:41,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850336184] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:41,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949584846] [2021-08-21 11:03:41,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:03:41,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:41,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:41,179 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:41,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-08-21 11:03:42,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 11:03:42,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:42,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:42,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:42,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949584846] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:42,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:42,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:42,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942921807] [2021-08-21 11:03:42,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:42,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:42,948 INFO L87 Difference]: Start difference. First operand 4016 states and 11276 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:43,687 INFO L93 Difference]: Finished difference Result 8397 states and 22467 transitions. [2021-08-21 11:03:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 11:03:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:43,698 INFO L225 Difference]: With dead ends: 8397 [2021-08-21 11:03:43,698 INFO L226 Difference]: Without dead ends: 7839 [2021-08-21 11:03:43,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 661.5ms TimeCoverageRelationStatistics Valid=681, Invalid=2399, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:03:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2021-08-21 11:03:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 3871. [2021-08-21 11:03:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 3870 states have (on average 2.77312661498708) internal successors, (10732), 3870 states have internal predecessors, (10732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 10732 transitions. [2021-08-21 11:03:43,753 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 10732 transitions. Word has length 57 [2021-08-21 11:03:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:43,754 INFO L470 AbstractCegarLoop]: Abstraction has 3871 states and 10732 transitions. [2021-08-21 11:03:43,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 10732 transitions. [2021-08-21 11:03:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:43,757 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:43,757 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:43,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-08-21 11:03:43,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-08-21 11:03:43,958 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:43,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1882805754, now seen corresponding path program 16 times [2021-08-21 11:03:43,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:43,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887662585] [2021-08-21 11:03:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:43,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:44,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:44,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887662585] [2021-08-21 11:03:44,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887662585] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:44,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945911610] [2021-08-21 11:03:44,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:03:44,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:44,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:44,042 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:44,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-08-21 11:03:45,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:03:45,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:45,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:45,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:45,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945911610] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:45,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:45,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:45,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555339876] [2021-08-21 11:03:45,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:45,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:45,898 INFO L87 Difference]: Start difference. First operand 3871 states and 10732 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:46,346 INFO L93 Difference]: Finished difference Result 6592 states and 17051 transitions. [2021-08-21 11:03:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:03:46,346 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:46,354 INFO L225 Difference]: With dead ends: 6592 [2021-08-21 11:03:46,354 INFO L226 Difference]: Without dead ends: 6440 [2021-08-21 11:03:46,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 402.0ms TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:03:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6440 states. [2021-08-21 11:03:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6440 to 4091. [2021-08-21 11:03:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 4090 states have (on average 2.7863080684596575) internal successors, (11396), 4090 states have internal predecessors, (11396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 11396 transitions. [2021-08-21 11:03:46,409 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 11396 transitions. Word has length 57 [2021-08-21 11:03:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:46,410 INFO L470 AbstractCegarLoop]: Abstraction has 4091 states and 11396 transitions. [2021-08-21 11:03:46,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 11396 transitions. [2021-08-21 11:03:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:46,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:46,414 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:46,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:46,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-08-21 11:03:46,625 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1507105260, now seen corresponding path program 17 times [2021-08-21 11:03:46,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:46,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465857431] [2021-08-21 11:03:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:46,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:46,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:46,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465857431] [2021-08-21 11:03:46,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465857431] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:46,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321764435] [2021-08-21 11:03:46,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:03:46,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:46,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:46,714 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:46,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-08-21 11:03:48,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-21 11:03:48,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:48,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:48,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:48,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321764435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:48,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:48,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:48,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617015966] [2021-08-21 11:03:48,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:48,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:48,600 INFO L87 Difference]: Start difference. First operand 4091 states and 11396 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:49,055 INFO L93 Difference]: Finished difference Result 6782 states and 17421 transitions. [2021-08-21 11:03:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:03:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:49,064 INFO L225 Difference]: With dead ends: 6782 [2021-08-21 11:03:49,064 INFO L226 Difference]: Without dead ends: 6630 [2021-08-21 11:03:49,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 422.2ms TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 11:03:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2021-08-21 11:03:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 4144. [2021-08-21 11:03:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 2.7859039343470915) internal successors, (11542), 4143 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 11542 transitions. [2021-08-21 11:03:49,131 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 11542 transitions. Word has length 57 [2021-08-21 11:03:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:49,131 INFO L470 AbstractCegarLoop]: Abstraction has 4144 states and 11542 transitions. [2021-08-21 11:03:49,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 11542 transitions. [2021-08-21 11:03:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:49,135 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:49,135 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:49,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:49,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-08-21 11:03:49,335 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1039088686, now seen corresponding path program 18 times [2021-08-21 11:03:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:49,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684530780] [2021-08-21 11:03:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:49,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:49,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:49,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684530780] [2021-08-21 11:03:49,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684530780] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:49,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49295032] [2021-08-21 11:03:49,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:03:49,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:49,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:49,430 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:49,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-08-21 11:03:50,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:03:50,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:50,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:51,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:51,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49295032] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:51,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:51,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:51,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218175390] [2021-08-21 11:03:51,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:51,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:51,384 INFO L87 Difference]: Start difference. First operand 4144 states and 11542 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:51,897 INFO L93 Difference]: Finished difference Result 6741 states and 17647 transitions. [2021-08-21 11:03:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:03:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:51,905 INFO L225 Difference]: With dead ends: 6741 [2021-08-21 11:03:51,905 INFO L226 Difference]: Without dead ends: 6589 [2021-08-21 11:03:51,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 445.9ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 11:03:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2021-08-21 11:03:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 4249. [2021-08-21 11:03:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 2.803201506591337) internal successors, (11908), 4248 states have internal predecessors, (11908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 11908 transitions. [2021-08-21 11:03:51,959 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 11908 transitions. Word has length 57 [2021-08-21 11:03:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:51,959 INFO L470 AbstractCegarLoop]: Abstraction has 4249 states and 11908 transitions. [2021-08-21 11:03:51,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 11908 transitions. [2021-08-21 11:03:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:51,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:51,964 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:51,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-08-21 11:03:52,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-08-21 11:03:52,184 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:52,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2129824792, now seen corresponding path program 19 times [2021-08-21 11:03:52,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:52,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676832716] [2021-08-21 11:03:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:52,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:52,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:52,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676832716] [2021-08-21 11:03:52,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676832716] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:52,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083902821] [2021-08-21 11:03:52,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:03:52,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:52,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:52,270 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:52,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-08-21 11:03:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:53,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:53,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:54,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083902821] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:54,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:54,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:54,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833623178] [2021-08-21 11:03:54,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:54,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:54,270 INFO L87 Difference]: Start difference. First operand 4249 states and 11908 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:54,743 INFO L93 Difference]: Finished difference Result 7064 states and 18951 transitions. [2021-08-21 11:03:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:03:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:54,754 INFO L225 Difference]: With dead ends: 7064 [2021-08-21 11:03:54,755 INFO L226 Difference]: Without dead ends: 6912 [2021-08-21 11:03:54,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 419.9ms TimeCoverageRelationStatistics Valid=410, Invalid=1312, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 11:03:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2021-08-21 11:03:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 4369. [2021-08-21 11:03:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 4368 states have (on average 2.8120421245421245) internal successors, (12283), 4368 states have internal predecessors, (12283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 12283 transitions. [2021-08-21 11:03:54,820 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 12283 transitions. Word has length 57 [2021-08-21 11:03:54,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:54,820 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 12283 transitions. [2021-08-21 11:03:54,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 12283 transitions. [2021-08-21 11:03:54,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:54,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:54,825 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:54,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-08-21 11:03:55,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:55,025 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:55,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1505569764, now seen corresponding path program 20 times [2021-08-21 11:03:55,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:55,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516781363] [2021-08-21 11:03:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:55,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:55,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:55,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516781363] [2021-08-21 11:03:55,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516781363] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:55,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943267479] [2021-08-21 11:03:55,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:03:55,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:55,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:55,118 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:55,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-08-21 11:03:56,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:03:56,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:03:56,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:03:56,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:03:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:57,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943267479] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:57,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:03:57,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:03:57,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192328745] [2021-08-21 11:03:57,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:03:57,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:03:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:03:57,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:03:57,184 INFO L87 Difference]: Start difference. First operand 4369 states and 12283 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:03:58,018 INFO L93 Difference]: Finished difference Result 9343 states and 25074 transitions. [2021-08-21 11:03:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 11:03:58,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:03:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:03:58,031 INFO L225 Difference]: With dead ends: 9343 [2021-08-21 11:03:58,031 INFO L226 Difference]: Without dead ends: 8737 [2021-08-21 11:03:58,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 730.4ms TimeCoverageRelationStatistics Valid=739, Invalid=2683, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 11:03:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8737 states. [2021-08-21 11:03:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8737 to 4286. [2021-08-21 11:03:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 2.779229871645274) internal successors, (11909), 4285 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 11909 transitions. [2021-08-21 11:03:58,107 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 11909 transitions. Word has length 57 [2021-08-21 11:03:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:03:58,107 INFO L470 AbstractCegarLoop]: Abstraction has 4286 states and 11909 transitions. [2021-08-21 11:03:58,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:03:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 11909 transitions. [2021-08-21 11:03:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:03:58,112 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:03:58,112 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:03:58,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-08-21 11:03:58,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-08-21 11:03:58,312 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:03:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:03:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash -926955930, now seen corresponding path program 21 times [2021-08-21 11:03:58,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:03:58,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709178166] [2021-08-21 11:03:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:03:58,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:03:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:03:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:03:58,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:03:58,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709178166] [2021-08-21 11:03:58,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709178166] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:03:58,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733420118] [2021-08-21 11:03:58,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:03:58,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:03:58,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:03:58,413 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:03:58,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-08-21 11:04:00,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 11:04:00,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:00,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:04:00,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:00,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733420118] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:00,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:00,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:04:00,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886996301] [2021-08-21 11:04:00,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:04:00,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:04:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:04:00,533 INFO L87 Difference]: Start difference. First operand 4286 states and 11909 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:01,108 INFO L93 Difference]: Finished difference Result 7772 states and 20736 transitions. [2021-08-21 11:04:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 11:04:01,109 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:04:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:01,120 INFO L225 Difference]: With dead ends: 7772 [2021-08-21 11:04:01,120 INFO L226 Difference]: Without dead ends: 7620 [2021-08-21 11:04:01,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 571.4ms TimeCoverageRelationStatistics Valid=498, Invalid=1572, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:04:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2021-08-21 11:04:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 4601. [2021-08-21 11:04:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 4600 states have (on average 2.807391304347826) internal successors, (12914), 4600 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 12914 transitions. [2021-08-21 11:04:01,199 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 12914 transitions. Word has length 57 [2021-08-21 11:04:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:01,199 INFO L470 AbstractCegarLoop]: Abstraction has 4601 states and 12914 transitions. [2021-08-21 11:04:01,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:01,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 12914 transitions. [2021-08-21 11:04:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 11:04:01,203 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:01,203 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:01,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-08-21 11:04:01,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:01,405 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:01,405 INFO L82 PathProgramCache]: Analyzing trace with hash -267383190, now seen corresponding path program 22 times [2021-08-21 11:04:01,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:01,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374525653] [2021-08-21 11:04:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:01,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:01,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:01,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374525653] [2021-08-21 11:04:01,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374525653] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:01,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607406507] [2021-08-21 11:04:01,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:04:01,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:01,498 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:01,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-08-21 11:04:03,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:04:03,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:03,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:04:03,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:03,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607406507] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:03,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:03,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-21 11:04:03,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071809550] [2021-08-21 11:04:03,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:04:03,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:04:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:04:03,712 INFO L87 Difference]: Start difference. First operand 4601 states and 12914 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:04,723 INFO L93 Difference]: Finished difference Result 9919 states and 26549 transitions. [2021-08-21 11:04:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 11:04:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 11:04:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:04,736 INFO L225 Difference]: With dead ends: 9919 [2021-08-21 11:04:04,736 INFO L226 Difference]: Without dead ends: 9209 [2021-08-21 11:04:04,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 893.1ms TimeCoverageRelationStatistics Valid=864, Invalid=3168, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 11:04:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9209 states. [2021-08-21 11:04:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9209 to 4416. [2021-08-21 11:04:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 4415 states have (on average 2.7807474518686295) internal successors, (12277), 4415 states have internal predecessors, (12277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 12277 transitions. [2021-08-21 11:04:04,815 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 12277 transitions. Word has length 57 [2021-08-21 11:04:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:04,815 INFO L470 AbstractCegarLoop]: Abstraction has 4416 states and 12277 transitions. [2021-08-21 11:04:04,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 12277 transitions. [2021-08-21 11:04:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:04,819 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:04,819 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:04,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-08-21 11:04:05,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-08-21 11:04:05,025 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:05,025 INFO L82 PathProgramCache]: Analyzing trace with hash -85522207, now seen corresponding path program 23 times [2021-08-21 11:04:05,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:05,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200398459] [2021-08-21 11:04:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:05,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:05,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:05,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200398459] [2021-08-21 11:04:05,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200398459] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:05,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296199675] [2021-08-21 11:04:05,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:04:05,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:05,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:05,143 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:05,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-08-21 11:04:06,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:04:06,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:06,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:07,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296199675] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:07,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:07,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:07,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638289767] [2021-08-21 11:04:07,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:07,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:07,457 INFO L87 Difference]: Start difference. First operand 4416 states and 12277 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:07,681 INFO L93 Difference]: Finished difference Result 6063 states and 15993 transitions. [2021-08-21 11:04:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-21 11:04:07,681 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:07,689 INFO L225 Difference]: With dead ends: 6063 [2021-08-21 11:04:07,690 INFO L226 Difference]: Without dead ends: 5911 [2021-08-21 11:04:07,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 268.3ms TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-08-21 11:04:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-08-21 11:04:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4491. [2021-08-21 11:04:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 2.771046770601336) internal successors, (12442), 4490 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 12442 transitions. [2021-08-21 11:04:07,766 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 12442 transitions. Word has length 62 [2021-08-21 11:04:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:07,766 INFO L470 AbstractCegarLoop]: Abstraction has 4491 states and 12442 transitions. [2021-08-21 11:04:07,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 12442 transitions. [2021-08-21 11:04:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:07,771 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:07,771 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:07,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:07,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:07,971 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:07,972 INFO L82 PathProgramCache]: Analyzing trace with hash 846879351, now seen corresponding path program 24 times [2021-08-21 11:04:07,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:07,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968012962] [2021-08-21 11:04:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:07,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:08,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:08,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968012962] [2021-08-21 11:04:08,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968012962] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:08,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131243127] [2021-08-21 11:04:08,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:04:08,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:08,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:08,083 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:08,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-08-21 11:04:09,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:04:09,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:09,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:09,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:10,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131243127] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:10,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:10,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:10,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705919984] [2021-08-21 11:04:10,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:10,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:10,506 INFO L87 Difference]: Start difference. First operand 4491 states and 12442 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:10,821 INFO L93 Difference]: Finished difference Result 6288 states and 16440 transitions. [2021-08-21 11:04:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:04:10,821 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:10,829 INFO L225 Difference]: With dead ends: 6288 [2021-08-21 11:04:10,829 INFO L226 Difference]: Without dead ends: 6136 [2021-08-21 11:04:10,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 335.7ms TimeCoverageRelationStatistics Valid=291, Invalid=765, Unknown=0, NotChecked=0, Total=1056 [2021-08-21 11:04:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-08-21 11:04:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 4506. [2021-08-21 11:04:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 2.7691453940066593) internal successors, (12475), 4505 states have internal predecessors, (12475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12475 transitions. [2021-08-21 11:04:10,886 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12475 transitions. Word has length 62 [2021-08-21 11:04:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:10,886 INFO L470 AbstractCegarLoop]: Abstraction has 4506 states and 12475 transitions. [2021-08-21 11:04:10,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12475 transitions. [2021-08-21 11:04:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:10,890 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:10,890 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:10,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:11,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:11,091 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1922541821, now seen corresponding path program 25 times [2021-08-21 11:04:11,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:11,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082662760] [2021-08-21 11:04:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:11,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:11,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:11,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082662760] [2021-08-21 11:04:11,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082662760] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:11,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571317307] [2021-08-21 11:04:11,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:04:11,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:11,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:11,251 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:11,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-08-21 11:04:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:13,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:13,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:13,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571317307] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:13,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:13,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:13,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049654305] [2021-08-21 11:04:13,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:13,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:13,660 INFO L87 Difference]: Start difference. First operand 4506 states and 12475 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:13,976 INFO L93 Difference]: Finished difference Result 6357 states and 16571 transitions. [2021-08-21 11:04:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:04:13,977 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:13,985 INFO L225 Difference]: With dead ends: 6357 [2021-08-21 11:04:13,985 INFO L226 Difference]: Without dead ends: 6205 [2021-08-21 11:04:13,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 337.9ms TimeCoverageRelationStatistics Valid=312, Invalid=878, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:04:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-08-21 11:04:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 4631. [2021-08-21 11:04:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4631 states, 4630 states have (on average 2.75377969762419) internal successors, (12750), 4630 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 12750 transitions. [2021-08-21 11:04:14,048 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 12750 transitions. Word has length 62 [2021-08-21 11:04:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:14,048 INFO L470 AbstractCegarLoop]: Abstraction has 4631 states and 12750 transitions. [2021-08-21 11:04:14,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 12750 transitions. [2021-08-21 11:04:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:14,053 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:14,053 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:14,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:14,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-08-21 11:04:14,253 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:14,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1996724981, now seen corresponding path program 26 times [2021-08-21 11:04:14,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:14,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916971099] [2021-08-21 11:04:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:14,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:14,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:14,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916971099] [2021-08-21 11:04:14,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916971099] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:14,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048798409] [2021-08-21 11:04:14,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:04:14,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:14,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:14,375 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:14,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-08-21 11:04:16,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:04:16,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:16,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:16,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:16,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048798409] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:16,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:16,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:16,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432820329] [2021-08-21 11:04:16,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:16,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:16,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:16,756 INFO L87 Difference]: Start difference. First operand 4631 states and 12750 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:17,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:17,157 INFO L93 Difference]: Finished difference Result 6752 states and 17504 transitions. [2021-08-21 11:04:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:04:17,158 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:17,167 INFO L225 Difference]: With dead ends: 6752 [2021-08-21 11:04:17,167 INFO L226 Difference]: Without dead ends: 6360 [2021-08-21 11:04:17,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 408.5ms TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:04:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-08-21 11:04:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 4671. [2021-08-21 11:04:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4670 states have (on average 2.747323340471092) internal successors, (12830), 4670 states have internal predecessors, (12830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 12830 transitions. [2021-08-21 11:04:17,224 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 12830 transitions. Word has length 62 [2021-08-21 11:04:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:17,225 INFO L470 AbstractCegarLoop]: Abstraction has 4671 states and 12830 transitions. [2021-08-21 11:04:17,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 12830 transitions. [2021-08-21 11:04:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:17,229 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:17,229 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:17,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:17,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-08-21 11:04:17,429 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:17,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1538326815, now seen corresponding path program 27 times [2021-08-21 11:04:17,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:17,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057092955] [2021-08-21 11:04:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:17,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:17,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:17,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057092955] [2021-08-21 11:04:17,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057092955] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:17,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349320464] [2021-08-21 11:04:17,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:04:17,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:17,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:17,536 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:17,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-08-21 11:04:19,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:04:19,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:19,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:19,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:20,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349320464] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:20,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:20,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:20,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356049164] [2021-08-21 11:04:20,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:20,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:20,084 INFO L87 Difference]: Start difference. First operand 4671 states and 12830 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:20,472 INFO L93 Difference]: Finished difference Result 6458 states and 16790 transitions. [2021-08-21 11:04:20,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:04:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:20,486 INFO L225 Difference]: With dead ends: 6458 [2021-08-21 11:04:20,486 INFO L226 Difference]: Without dead ends: 6306 [2021-08-21 11:04:20,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 401.5ms TimeCoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:04:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-08-21 11:04:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 4646. [2021-08-21 11:04:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4645 states have (on average 2.7502691065662) internal successors, (12775), 4645 states have internal predecessors, (12775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 12775 transitions. [2021-08-21 11:04:20,568 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 12775 transitions. Word has length 62 [2021-08-21 11:04:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:20,568 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 12775 transitions. [2021-08-21 11:04:20,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 12775 transitions. [2021-08-21 11:04:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:20,573 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:20,573 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:20,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:20,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-08-21 11:04:20,774 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:20,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:20,774 INFO L82 PathProgramCache]: Analyzing trace with hash -222408201, now seen corresponding path program 28 times [2021-08-21 11:04:20,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:20,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077609509] [2021-08-21 11:04:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:20,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:20,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:20,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077609509] [2021-08-21 11:04:20,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077609509] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:20,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932593161] [2021-08-21 11:04:20,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:04:20,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:20,883 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:20,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-08-21 11:04:22,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:04:22,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:22,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:22,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:23,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932593161] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:23,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:23,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:23,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646527210] [2021-08-21 11:04:23,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:23,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:23,402 INFO L87 Difference]: Start difference. First operand 4646 states and 12775 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:23,765 INFO L93 Difference]: Finished difference Result 6415 states and 16697 transitions. [2021-08-21 11:04:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:04:23,765 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:23,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:23,774 INFO L225 Difference]: With dead ends: 6415 [2021-08-21 11:04:23,774 INFO L226 Difference]: Without dead ends: 6263 [2021-08-21 11:04:23,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 380.8ms TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:04:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2021-08-21 11:04:23,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 4776. [2021-08-21 11:04:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4775 states have (on average 2.735287958115183) internal successors, (13061), 4775 states have internal predecessors, (13061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 13061 transitions. [2021-08-21 11:04:23,836 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 13061 transitions. Word has length 62 [2021-08-21 11:04:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:23,836 INFO L470 AbstractCegarLoop]: Abstraction has 4776 states and 13061 transitions. [2021-08-21 11:04:23,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 13061 transitions. [2021-08-21 11:04:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:23,840 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:23,840 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:23,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-08-21 11:04:24,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-08-21 11:04:24,041 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:24,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:24,041 INFO L82 PathProgramCache]: Analyzing trace with hash -598108695, now seen corresponding path program 29 times [2021-08-21 11:04:24,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:24,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808272010] [2021-08-21 11:04:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:24,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:24,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:24,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808272010] [2021-08-21 11:04:24,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808272010] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:24,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673862235] [2021-08-21 11:04:24,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:04:24,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:24,151 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:24,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-08-21 11:04:26,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:04:26,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:26,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:26,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:26,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673862235] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:26,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:26,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:26,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695680653] [2021-08-21 11:04:26,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:26,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:26,678 INFO L87 Difference]: Start difference. First operand 4776 states and 13061 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:27,096 INFO L93 Difference]: Finished difference Result 6688 states and 17240 transitions. [2021-08-21 11:04:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 11:04:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:27,105 INFO L225 Difference]: With dead ends: 6688 [2021-08-21 11:04:27,105 INFO L226 Difference]: Without dead ends: 6536 [2021-08-21 11:04:27,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 413.1ms TimeCoverageRelationStatistics Valid=432, Invalid=1208, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 11:04:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2021-08-21 11:04:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 4801. [2021-08-21 11:04:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 4800 states have (on average 2.7325) internal successors, (13116), 4800 states have internal predecessors, (13116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 13116 transitions. [2021-08-21 11:04:27,158 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 13116 transitions. Word has length 62 [2021-08-21 11:04:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:27,159 INFO L470 AbstractCegarLoop]: Abstraction has 4801 states and 13116 transitions. [2021-08-21 11:04:27,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 13116 transitions. [2021-08-21 11:04:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:27,163 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:27,163 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:27,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-08-21 11:04:27,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-08-21 11:04:27,365 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash -187277073, now seen corresponding path program 21 times [2021-08-21 11:04:27,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:27,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204853664] [2021-08-21 11:04:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:27,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:27,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:27,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204853664] [2021-08-21 11:04:27,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204853664] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:27,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408496206] [2021-08-21 11:04:27,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:04:27,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:27,475 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:27,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-08-21 11:04:29,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:04:29,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:30,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408496206] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:30,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:30,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:04:30,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402273602] [2021-08-21 11:04:30,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:04:30,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:04:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:04:30,065 INFO L87 Difference]: Start difference. First operand 4801 states and 13116 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:30,442 INFO L93 Difference]: Finished difference Result 6303 states and 16473 transitions. [2021-08-21 11:04:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:04:30,461 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:30,470 INFO L225 Difference]: With dead ends: 6303 [2021-08-21 11:04:30,470 INFO L226 Difference]: Without dead ends: 6151 [2021-08-21 11:04:30,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 392.0ms TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:04:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2021-08-21 11:04:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 4760. [2021-08-21 11:04:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4759 states have (on average 2.736079008194999) internal successors, (13021), 4759 states have internal predecessors, (13021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 13021 transitions. [2021-08-21 11:04:30,526 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 13021 transitions. Word has length 62 [2021-08-21 11:04:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:30,527 INFO L470 AbstractCegarLoop]: Abstraction has 4760 states and 13021 transitions. [2021-08-21 11:04:30,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 13021 transitions. [2021-08-21 11:04:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:30,531 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:30,532 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:30,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-08-21 11:04:30,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-08-21 11:04:30,732 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:30,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:30,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1408613833, now seen corresponding path program 30 times [2021-08-21 11:04:30,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:30,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454440393] [2021-08-21 11:04:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:30,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:30,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:30,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454440393] [2021-08-21 11:04:30,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454440393] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:30,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112867350] [2021-08-21 11:04:30,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:04:30,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:30,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:30,884 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:30,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-08-21 11:04:33,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:04:33,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:33,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:33,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:33,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112867350] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:33,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:33,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:33,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646002610] [2021-08-21 11:04:33,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:33,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:33,554 INFO L87 Difference]: Start difference. First operand 4760 states and 13021 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:33,932 INFO L93 Difference]: Finished difference Result 6324 states and 16500 transitions. [2021-08-21 11:04:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:04:33,933 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:33,941 INFO L225 Difference]: With dead ends: 6324 [2021-08-21 11:04:33,941 INFO L226 Difference]: Without dead ends: 6172 [2021-08-21 11:04:33,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 452.4ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:04:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2021-08-21 11:04:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 4695. [2021-08-21 11:04:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 2.7435023434171284) internal successors, (12878), 4694 states have internal predecessors, (12878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 12878 transitions. [2021-08-21 11:04:33,994 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 12878 transitions. Word has length 62 [2021-08-21 11:04:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:33,995 INFO L470 AbstractCegarLoop]: Abstraction has 4695 states and 12878 transitions. [2021-08-21 11:04:33,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 12878 transitions. [2021-08-21 11:04:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:33,999 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:33,999 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:34,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-08-21 11:04:34,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:34,199 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:34,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:34,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1572644747, now seen corresponding path program 31 times [2021-08-21 11:04:34,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:34,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615913647] [2021-08-21 11:04:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:34,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:34,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:34,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615913647] [2021-08-21 11:04:34,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615913647] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:34,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28259751] [2021-08-21 11:04:34,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:04:34,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:34,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:34,309 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:34,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-08-21 11:04:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:36,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:36,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:37,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28259751] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:37,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:37,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:37,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664691469] [2021-08-21 11:04:37,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:37,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:37,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:37,045 INFO L87 Difference]: Start difference. First operand 4695 states and 12878 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:37,327 INFO L93 Difference]: Finished difference Result 6607 states and 17089 transitions. [2021-08-21 11:04:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 11:04:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:37,336 INFO L225 Difference]: With dead ends: 6607 [2021-08-21 11:04:37,336 INFO L226 Difference]: Without dead ends: 6455 [2021-08-21 11:04:37,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 320.2ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:04:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2021-08-21 11:04:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 4745. [2021-08-21 11:04:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 2.7377740303541316) internal successors, (12988), 4744 states have internal predecessors, (12988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 12988 transitions. [2021-08-21 11:04:37,396 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 12988 transitions. Word has length 62 [2021-08-21 11:04:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:37,396 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 12988 transitions. [2021-08-21 11:04:37,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 12988 transitions. [2021-08-21 11:04:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:37,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:37,401 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:37,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:37,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:37,601 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:37,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1789920991, now seen corresponding path program 32 times [2021-08-21 11:04:37,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:37,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660297152] [2021-08-21 11:04:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:37,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:37,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:37,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660297152] [2021-08-21 11:04:37,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660297152] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:37,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905655435] [2021-08-21 11:04:37,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:04:37,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:37,706 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:37,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-08-21 11:04:39,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:04:39,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:39,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:39,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:40,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905655435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:40,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:40,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:40,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573017918] [2021-08-21 11:04:40,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:40,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:40,478 INFO L87 Difference]: Start difference. First operand 4745 states and 12988 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:40,827 INFO L93 Difference]: Finished difference Result 6937 states and 17751 transitions. [2021-08-21 11:04:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:04:40,827 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:40,836 INFO L225 Difference]: With dead ends: 6937 [2021-08-21 11:04:40,836 INFO L226 Difference]: Without dead ends: 6785 [2021-08-21 11:04:40,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 357.7ms TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:04:40,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2021-08-21 11:04:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 4745. [2021-08-21 11:04:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 2.7377740303541316) internal successors, (12988), 4744 states have internal predecessors, (12988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 12988 transitions. [2021-08-21 11:04:40,899 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 12988 transitions. Word has length 62 [2021-08-21 11:04:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:40,899 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 12988 transitions. [2021-08-21 11:04:40,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 12988 transitions. [2021-08-21 11:04:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:40,904 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:40,904 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:40,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:41,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:41,112 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash -264374867, now seen corresponding path program 33 times [2021-08-21 11:04:41,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:41,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874686054] [2021-08-21 11:04:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:41,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:41,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:41,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874686054] [2021-08-21 11:04:41,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874686054] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:41,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108806078] [2021-08-21 11:04:41,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:04:41,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:41,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:41,218 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:41,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-08-21 11:04:43,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 11:04:43,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:43,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:43,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:44,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108806078] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:44,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:44,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:44,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342917542] [2021-08-21 11:04:44,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:44,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:44,053 INFO L87 Difference]: Start difference. First operand 4745 states and 12988 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:44,502 INFO L93 Difference]: Finished difference Result 6998 states and 17858 transitions. [2021-08-21 11:04:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:04:44,502 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:44,511 INFO L225 Difference]: With dead ends: 6998 [2021-08-21 11:04:44,512 INFO L226 Difference]: Without dead ends: 6846 [2021-08-21 11:04:44,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 434.2ms TimeCoverageRelationStatistics Valid=413, Invalid=1227, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 11:04:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2021-08-21 11:04:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 4820. [2021-08-21 11:04:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4819 states have (on average 2.7294044407553435) internal successors, (13153), 4819 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 13153 transitions. [2021-08-21 11:04:44,577 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 13153 transitions. Word has length 62 [2021-08-21 11:04:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:44,577 INFO L470 AbstractCegarLoop]: Abstraction has 4820 states and 13153 transitions. [2021-08-21 11:04:44,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 13153 transitions. [2021-08-21 11:04:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:44,581 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:44,582 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:44,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-08-21 11:04:44,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:44,782 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash -640075361, now seen corresponding path program 34 times [2021-08-21 11:04:44,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:44,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475446629] [2021-08-21 11:04:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:44,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:44,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:44,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475446629] [2021-08-21 11:04:44,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475446629] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:44,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250985568] [2021-08-21 11:04:44,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:04:44,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:44,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:44,888 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:44,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-08-21 11:04:47,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:04:47,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:47,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:47,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:47,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250985568] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:47,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:47,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:47,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714218271] [2021-08-21 11:04:47,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:47,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:47,710 INFO L87 Difference]: Start difference. First operand 4820 states and 13153 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:48,223 INFO L93 Difference]: Finished difference Result 7333 states and 18651 transitions. [2021-08-21 11:04:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:04:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:48,233 INFO L225 Difference]: With dead ends: 7333 [2021-08-21 11:04:48,233 INFO L226 Difference]: Without dead ends: 6941 [2021-08-21 11:04:48,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 481.7ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:04:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2021-08-21 11:04:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 4745. [2021-08-21 11:04:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 2.7377740303541316) internal successors, (12988), 4744 states have internal predecessors, (12988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 12988 transitions. [2021-08-21 11:04:48,310 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 12988 transitions. Word has length 62 [2021-08-21 11:04:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:48,310 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 12988 transitions. [2021-08-21 11:04:48,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 12988 transitions. [2021-08-21 11:04:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:48,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:48,315 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:48,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:48,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-08-21 11:04:48,529 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:48,529 INFO L82 PathProgramCache]: Analyzing trace with hash 119840139, now seen corresponding path program 35 times [2021-08-21 11:04:48,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:48,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893529261] [2021-08-21 11:04:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:48,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:48,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:48,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893529261] [2021-08-21 11:04:48,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893529261] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:48,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117218362] [2021-08-21 11:04:48,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:04:48,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:48,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:48,626 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:48,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-08-21 11:04:51,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:04:51,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:51,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:51,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:51,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117218362] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:51,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:51,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:51,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221894246] [2021-08-21 11:04:51,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:51,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:51,518 INFO L87 Difference]: Start difference. First operand 4745 states and 12988 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:51,941 INFO L93 Difference]: Finished difference Result 6708 states and 17268 transitions. [2021-08-21 11:04:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 11:04:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:51,950 INFO L225 Difference]: With dead ends: 6708 [2021-08-21 11:04:51,950 INFO L226 Difference]: Without dead ends: 6556 [2021-08-21 11:04:51,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 404.8ms TimeCoverageRelationStatistics Valid=383, Invalid=1177, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:04:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2021-08-21 11:04:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 4670. [2021-08-21 11:04:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4669 states have (on average 2.7464125080316983) internal successors, (12823), 4669 states have internal predecessors, (12823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 12823 transitions. [2021-08-21 11:04:52,017 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 12823 transitions. Word has length 62 [2021-08-21 11:04:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:52,017 INFO L470 AbstractCegarLoop]: Abstraction has 4670 states and 12823 transitions. [2021-08-21 11:04:52,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 12823 transitions. [2021-08-21 11:04:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:52,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:52,022 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:52,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-08-21 11:04:52,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-08-21 11:04:52,223 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:52,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1262280279, now seen corresponding path program 36 times [2021-08-21 11:04:52,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:52,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902503624] [2021-08-21 11:04:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:52,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:52,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:52,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902503624] [2021-08-21 11:04:52,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902503624] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:52,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541142137] [2021-08-21 11:04:52,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:04:52,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:52,325 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:52,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-08-21 11:04:54,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:04:54,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:04:54,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:54,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:55,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541142137] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:55,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:55,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:55,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127212836] [2021-08-21 11:04:55,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:55,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:55,210 INFO L87 Difference]: Start difference. First operand 4670 states and 12823 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:55,499 INFO L93 Difference]: Finished difference Result 6662 states and 17194 transitions. [2021-08-21 11:04:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:04:55,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:55,509 INFO L225 Difference]: With dead ends: 6662 [2021-08-21 11:04:55,509 INFO L226 Difference]: Without dead ends: 6510 [2021-08-21 11:04:55,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 299.4ms TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-08-21 11:04:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2021-08-21 11:04:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 4695. [2021-08-21 11:04:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 2.7435023434171284) internal successors, (12878), 4694 states have internal predecessors, (12878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 12878 transitions. [2021-08-21 11:04:55,573 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 12878 transitions. Word has length 62 [2021-08-21 11:04:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:55,573 INFO L470 AbstractCegarLoop]: Abstraction has 4695 states and 12878 transitions. [2021-08-21 11:04:55,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 12878 transitions. [2021-08-21 11:04:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:55,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:55,578 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:55,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-08-21 11:04:55,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:55,778 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:55,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:55,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2100285459, now seen corresponding path program 37 times [2021-08-21 11:04:55,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:55,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835234564] [2021-08-21 11:04:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:55,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:55,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:55,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835234564] [2021-08-21 11:04:55,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835234564] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:55,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226789929] [2021-08-21 11:04:55,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:04:55,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:55,880 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:55,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-08-21 11:04:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:58,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:04:58,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:04:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:58,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226789929] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:58,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:04:58,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:04:58,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880597742] [2021-08-21 11:04:58,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:04:58,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:04:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:04:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:04:58,820 INFO L87 Difference]: Start difference. First operand 4695 states and 12878 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:04:59,196 INFO L93 Difference]: Finished difference Result 6967 states and 17801 transitions. [2021-08-21 11:04:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:04:59,196 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:04:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:04:59,205 INFO L225 Difference]: With dead ends: 6967 [2021-08-21 11:04:59,206 INFO L226 Difference]: Without dead ends: 6815 [2021-08-21 11:04:59,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 359.3ms TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:04:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-08-21 11:04:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4695. [2021-08-21 11:04:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 2.7435023434171284) internal successors, (12878), 4694 states have internal predecessors, (12878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 12878 transitions. [2021-08-21 11:04:59,267 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 12878 transitions. Word has length 62 [2021-08-21 11:04:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:04:59,267 INFO L470 AbstractCegarLoop]: Abstraction has 4695 states and 12878 transitions. [2021-08-21 11:04:59,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:04:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 12878 transitions. [2021-08-21 11:04:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:04:59,272 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:04:59,272 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:04:59,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-08-21 11:04:59,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:59,475 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:04:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:04:59,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1789880309, now seen corresponding path program 38 times [2021-08-21 11:04:59,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:04:59,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016155153] [2021-08-21 11:04:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:04:59,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:04:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:04:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:04:59,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:04:59,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016155153] [2021-08-21 11:04:59,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016155153] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:04:59,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078621673] [2021-08-21 11:04:59,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:04:59,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:04:59,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:04:59,589 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:04:59,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-08-21 11:05:02,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:05:02,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:05:02,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:05:02,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:05:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:05:02,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078621673] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:05:02,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:05:02,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:05:02,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253416208] [2021-08-21 11:05:02,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:05:02,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:05:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:05:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:05:02,734 INFO L87 Difference]: Start difference. First operand 4695 states and 12878 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:05:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:05:03,034 INFO L93 Difference]: Finished difference Result 6692 states and 17274 transitions. [2021-08-21 11:05:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:05:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:05:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:05:03,044 INFO L225 Difference]: With dead ends: 6692 [2021-08-21 11:05:03,045 INFO L226 Difference]: Without dead ends: 6540 [2021-08-21 11:05:03,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 324.3ms TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-08-21 11:05:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2021-08-21 11:05:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 4670. [2021-08-21 11:05:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4669 states have (on average 2.7464125080316983) internal successors, (12823), 4669 states have internal predecessors, (12823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:05:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 12823 transitions. [2021-08-21 11:05:03,117 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 12823 transitions. Word has length 62 [2021-08-21 11:05:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:05:03,117 INFO L470 AbstractCegarLoop]: Abstraction has 4670 states and 12823 transitions. [2021-08-21 11:05:03,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:05:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 12823 transitions. [2021-08-21 11:05:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:05:03,122 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:05:03,122 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:05:03,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-08-21 11:05:03,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-08-21 11:05:03,323 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:05:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:05:03,323 INFO L82 PathProgramCache]: Analyzing trace with hash 640887987, now seen corresponding path program 39 times [2021-08-21 11:05:03,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:05:03,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893062499] [2021-08-21 11:05:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:05:03,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:05:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:05:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:05:03,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:05:03,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893062499] [2021-08-21 11:05:03,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893062499] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:05:03,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316007342] [2021-08-21 11:05:03,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:05:03,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:05:03,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:05:03,436 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:05:03,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-08-21 11:05:06,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:05:06,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:05:06,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:05:06,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:05:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:05:06,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316007342] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:05:06,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:05:06,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:05:06,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301054155] [2021-08-21 11:05:06,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:05:06,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:05:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:05:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:05:06,556 INFO L87 Difference]: Start difference. First operand 4670 states and 12823 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:05:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:05:07,088 INFO L93 Difference]: Finished difference Result 6911 states and 17947 transitions. [2021-08-21 11:05:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:05:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:05:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:05:07,098 INFO L225 Difference]: With dead ends: 6911 [2021-08-21 11:05:07,098 INFO L226 Difference]: Without dead ends: 6759 [2021-08-21 11:05:07,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 488.9ms TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:05:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6759 states. [2021-08-21 11:05:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6759 to 4745. [2021-08-21 11:05:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 2.7567453625632377) internal successors, (13078), 4744 states have internal predecessors, (13078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:05:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 13078 transitions. [2021-08-21 11:05:07,167 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 13078 transitions. Word has length 62 [2021-08-21 11:05:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:05:07,167 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 13078 transitions. [2021-08-21 11:05:07,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:05:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 13078 transitions. [2021-08-21 11:05:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:05:07,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:05:07,172 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:05:07,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-08-21 11:05:07,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-08-21 11:05:07,393 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:05:07,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:05:07,393 INFO L82 PathProgramCache]: Analyzing trace with hash -758566401, now seen corresponding path program 40 times [2021-08-21 11:05:07,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:05:07,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132954595] [2021-08-21 11:05:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:05:07,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:05:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:05:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:05:07,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:05:07,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132954595] [2021-08-21 11:05:07,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132954595] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:05:07,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151177419] [2021-08-21 11:05:07,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:05:07,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:05:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:05:07,553 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:05:07,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-08-21 11:05:10,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:05:10,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:05:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:05:10,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:05:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:05:10,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151177419] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:05:10,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:05:10,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:05:10,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24040201] [2021-08-21 11:05:10,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:05:10,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:05:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:05:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:05:10,849 INFO L87 Difference]: Start difference. First operand 4745 states and 13078 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:06,221 INFO L93 Difference]: Finished difference Result 10122 states and 26580 transitions. [2021-08-21 11:07:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 11:07:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:06,235 INFO L225 Difference]: With dead ends: 10122 [2021-08-21 11:07:06,235 INFO L226 Difference]: Without dead ends: 9548 [2021-08-21 11:07:06,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 31242.1ms TimeCoverageRelationStatistics Valid=598, Invalid=2046, Unknown=8, NotChecked=0, Total=2652 [2021-08-21 11:07:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2021-08-21 11:07:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 4645. [2021-08-21 11:07:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4645 states, 4644 states have (on average 2.749354005167959) internal successors, (12768), 4644 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 12768 transitions. [2021-08-21 11:07:06,321 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 12768 transitions. Word has length 62 [2021-08-21 11:07:06,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:06,321 INFO L470 AbstractCegarLoop]: Abstraction has 4645 states and 12768 transitions. [2021-08-21 11:07:06,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 12768 transitions. [2021-08-21 11:07:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:06,326 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:06,326 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:06,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-08-21 11:07:06,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:06,526 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1452408097, now seen corresponding path program 41 times [2021-08-21 11:07:06,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:06,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817250267] [2021-08-21 11:07:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:06,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:06,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:06,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817250267] [2021-08-21 11:07:06,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817250267] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:06,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333572655] [2021-08-21 11:07:06,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:07:06,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:06,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:06,648 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:06,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-08-21 11:07:09,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:07:09,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:09,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:09,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:09,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333572655] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:09,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:09,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:09,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289316759] [2021-08-21 11:07:09,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:09,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:09,891 INFO L87 Difference]: Start difference. First operand 4645 states and 12768 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:10,396 INFO L93 Difference]: Finished difference Result 8197 states and 21020 transitions. [2021-08-21 11:07:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:07:10,396 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:10,407 INFO L225 Difference]: With dead ends: 8197 [2021-08-21 11:07:10,407 INFO L226 Difference]: Without dead ends: 8045 [2021-08-21 11:07:10,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 504.5ms TimeCoverageRelationStatistics Valid=422, Invalid=1300, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 11:07:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-08-21 11:07:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 4720. [2021-08-21 11:07:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4719 states have (on average 2.7596948506039416) internal successors, (13023), 4719 states have internal predecessors, (13023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 13023 transitions. [2021-08-21 11:07:10,470 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 13023 transitions. Word has length 62 [2021-08-21 11:07:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:10,470 INFO L470 AbstractCegarLoop]: Abstraction has 4720 states and 13023 transitions. [2021-08-21 11:07:10,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 13023 transitions. [2021-08-21 11:07:10,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:10,474 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:10,474 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:10,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-08-21 11:07:10,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-08-21 11:07:10,675 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:10,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:10,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1716505381, now seen corresponding path program 42 times [2021-08-21 11:07:10,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:10,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184228645] [2021-08-21 11:07:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:10,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:10,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:10,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184228645] [2021-08-21 11:07:10,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184228645] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:10,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978588592] [2021-08-21 11:07:10,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:07:10,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:10,793 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:10,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-08-21 11:07:13,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:07:13,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:13,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:13,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978588592] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:13,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:13,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:13,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757463542] [2021-08-21 11:07:13,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:13,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:13,997 INFO L87 Difference]: Start difference. First operand 4720 states and 13023 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:14,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:14,584 INFO L93 Difference]: Finished difference Result 8553 states and 22585 transitions. [2021-08-21 11:07:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:07:14,585 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:14,598 INFO L225 Difference]: With dead ends: 8553 [2021-08-21 11:07:14,598 INFO L226 Difference]: Without dead ends: 8401 [2021-08-21 11:07:14,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 527.4ms TimeCoverageRelationStatistics Valid=445, Invalid=1361, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 11:07:14,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2021-08-21 11:07:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 4960. [2021-08-21 11:07:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4959 states have (on average 2.7725347852389595) internal successors, (13749), 4959 states have internal predecessors, (13749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 13749 transitions. [2021-08-21 11:07:14,684 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 13749 transitions. Word has length 62 [2021-08-21 11:07:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:14,684 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 13749 transitions. [2021-08-21 11:07:14,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 13749 transitions. [2021-08-21 11:07:14,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:14,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:14,690 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:14,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-08-21 11:07:14,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:14,890 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:14,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:14,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1918889175, now seen corresponding path program 43 times [2021-08-21 11:07:14,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:14,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700981091] [2021-08-21 11:07:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:14,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:14,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:14,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700981091] [2021-08-21 11:07:14,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700981091] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:14,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312367242] [2021-08-21 11:07:14,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:07:14,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:14,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:14,994 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:14,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-08-21 11:07:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:17,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:17,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:18,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312367242] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:18,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:18,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:18,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454682187] [2021-08-21 11:07:18,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:18,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:18,272 INFO L87 Difference]: Start difference. First operand 4960 states and 13749 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:19,204 INFO L93 Difference]: Finished difference Result 10913 states and 28858 transitions. [2021-08-21 11:07:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 11:07:19,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:19,218 INFO L225 Difference]: With dead ends: 10913 [2021-08-21 11:07:19,219 INFO L226 Difference]: Without dead ends: 10355 [2021-08-21 11:07:19,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 845.5ms TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 11:07:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10355 states. [2021-08-21 11:07:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10355 to 4450. [2021-08-21 11:07:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4449 states have (on average 2.72285906945381) internal successors, (12114), 4449 states have internal predecessors, (12114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 12114 transitions. [2021-08-21 11:07:19,300 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 12114 transitions. Word has length 62 [2021-08-21 11:07:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:19,300 INFO L470 AbstractCegarLoop]: Abstraction has 4450 states and 12114 transitions. [2021-08-21 11:07:19,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 12114 transitions. [2021-08-21 11:07:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:19,304 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:19,304 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:19,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-08-21 11:07:19,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:19,513 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1516775931, now seen corresponding path program 44 times [2021-08-21 11:07:19,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:19,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436123611] [2021-08-21 11:07:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:19,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:19,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:19,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436123611] [2021-08-21 11:07:19,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436123611] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:19,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032422019] [2021-08-21 11:07:19,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:07:19,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:19,623 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:19,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-08-21 11:07:22,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:07:22,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:22,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:22,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:22,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032422019] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:22,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:22,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:22,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162464411] [2021-08-21 11:07:22,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:22,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:22,948 INFO L87 Difference]: Start difference. First operand 4450 states and 12114 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:23,538 INFO L93 Difference]: Finished difference Result 7988 states and 20198 transitions. [2021-08-21 11:07:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 11:07:23,538 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:23,549 INFO L225 Difference]: With dead ends: 7988 [2021-08-21 11:07:23,549 INFO L226 Difference]: Without dead ends: 7836 [2021-08-21 11:07:23,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 525.0ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:07:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7836 states. [2021-08-21 11:07:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7836 to 4750. [2021-08-21 11:07:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4750 states, 4749 states have (on average 2.746683512318383) internal successors, (13044), 4749 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 13044 transitions. [2021-08-21 11:07:23,620 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 13044 transitions. Word has length 62 [2021-08-21 11:07:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:23,620 INFO L470 AbstractCegarLoop]: Abstraction has 4750 states and 13044 transitions. [2021-08-21 11:07:23,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 13044 transitions. [2021-08-21 11:07:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:23,625 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:23,625 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:23,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-08-21 11:07:23,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-08-21 11:07:23,832 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:23,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1141075437, now seen corresponding path program 45 times [2021-08-21 11:07:23,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:23,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858921222] [2021-08-21 11:07:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:23,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:23,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:23,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858921222] [2021-08-21 11:07:23,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858921222] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:23,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41995088] [2021-08-21 11:07:23,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:07:23,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:23,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:23,964 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:23,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-08-21 11:07:26,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:07:26,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:26,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:26,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:27,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41995088] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:27,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:27,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:27,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822399794] [2021-08-21 11:07:27,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:27,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:27,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:27,230 INFO L87 Difference]: Start difference. First operand 4750 states and 13044 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:27,903 INFO L93 Difference]: Finished difference Result 8436 states and 21222 transitions. [2021-08-21 11:07:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 11:07:27,903 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:27,915 INFO L225 Difference]: With dead ends: 8436 [2021-08-21 11:07:27,915 INFO L226 Difference]: Without dead ends: 8044 [2021-08-21 11:07:27,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 605.5ms TimeCoverageRelationStatistics Valid=560, Invalid=1990, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 11:07:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2021-08-21 11:07:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 4890. [2021-08-21 11:07:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 4889 states have (on average 2.758028226631213) internal successors, (13484), 4889 states have internal predecessors, (13484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 13484 transitions. [2021-08-21 11:07:27,990 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 13484 transitions. Word has length 62 [2021-08-21 11:07:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:27,990 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 13484 transitions. [2021-08-21 11:07:27,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 13484 transitions. [2021-08-21 11:07:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:27,994 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:27,994 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:28,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-08-21 11:07:28,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:28,198 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:28,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:28,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1405118509, now seen corresponding path program 46 times [2021-08-21 11:07:28,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:28,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600916088] [2021-08-21 11:07:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:28,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:28,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:28,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600916088] [2021-08-21 11:07:28,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600916088] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:28,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919103213] [2021-08-21 11:07:28,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:07:28,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:28,309 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:28,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-08-21 11:07:31,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:07:31,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:31,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:31,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:31,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919103213] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:31,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:31,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:31,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364463382] [2021-08-21 11:07:31,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:31,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:31,636 INFO L87 Difference]: Start difference. First operand 4890 states and 13484 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:32,285 INFO L93 Difference]: Finished difference Result 8298 states and 21375 transitions. [2021-08-21 11:07:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 11:07:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:32,297 INFO L225 Difference]: With dead ends: 8298 [2021-08-21 11:07:32,297 INFO L226 Difference]: Without dead ends: 8146 [2021-08-21 11:07:32,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 590.1ms TimeCoverageRelationStatistics Valid=565, Invalid=1787, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:07:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2021-08-21 11:07:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 5040. [2021-08-21 11:07:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5039 states have (on average 2.7771383210954554) internal successors, (13994), 5039 states have internal predecessors, (13994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 13994 transitions. [2021-08-21 11:07:32,373 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 13994 transitions. Word has length 62 [2021-08-21 11:07:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:32,373 INFO L470 AbstractCegarLoop]: Abstraction has 5040 states and 13994 transitions. [2021-08-21 11:07:32,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 13994 transitions. [2021-08-21 11:07:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:32,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:32,378 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:32,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-08-21 11:07:32,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:32,578 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1763794969, now seen corresponding path program 47 times [2021-08-21 11:07:32,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:32,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535607972] [2021-08-21 11:07:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:32,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:32,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:32,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535607972] [2021-08-21 11:07:32,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535607972] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:32,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581304521] [2021-08-21 11:07:32,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:07:32,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:32,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:32,686 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:32,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-08-21 11:07:35,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-21 11:07:35,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:35,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:35,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:36,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581304521] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:36,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:36,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:36,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295832154] [2021-08-21 11:07:36,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:36,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:36,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:36,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:36,044 INFO L87 Difference]: Start difference. First operand 5040 states and 13994 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:36,666 INFO L93 Difference]: Finished difference Result 8861 states and 23394 transitions. [2021-08-21 11:07:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 11:07:36,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:36,680 INFO L225 Difference]: With dead ends: 8861 [2021-08-21 11:07:36,680 INFO L226 Difference]: Without dead ends: 8709 [2021-08-21 11:07:36,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 559.3ms TimeCoverageRelationStatistics Valid=538, Invalid=1718, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:07:36,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8709 states. [2021-08-21 11:07:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8709 to 5160. [2021-08-21 11:07:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 5159 states have (on average 2.7852296956774567) internal successors, (14369), 5159 states have internal predecessors, (14369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 14369 transitions. [2021-08-21 11:07:36,771 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 14369 transitions. Word has length 62 [2021-08-21 11:07:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:36,772 INFO L470 AbstractCegarLoop]: Abstraction has 5160 states and 14369 transitions. [2021-08-21 11:07:36,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 14369 transitions. [2021-08-21 11:07:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:36,777 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:36,777 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:36,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-08-21 11:07:36,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:36,989 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1871599587, now seen corresponding path program 48 times [2021-08-21 11:07:36,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:36,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578917963] [2021-08-21 11:07:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:36,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:37,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:37,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578917963] [2021-08-21 11:07:37,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578917963] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:37,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816763594] [2021-08-21 11:07:37,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:07:37,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:37,185 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:37,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-08-21 11:07:40,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-08-21 11:07:40,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:40,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:40,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:40,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816763594] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:40,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:40,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:40,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129270945] [2021-08-21 11:07:40,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:40,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:40,606 INFO L87 Difference]: Start difference. First operand 5160 states and 14369 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:41,715 INFO L93 Difference]: Finished difference Result 11696 states and 30976 transitions. [2021-08-21 11:07:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 11:07:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:41,728 INFO L225 Difference]: With dead ends: 11696 [2021-08-21 11:07:41,728 INFO L226 Difference]: Without dead ends: 10871 [2021-08-21 11:07:41,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 991.8ms TimeCoverageRelationStatistics Valid=950, Invalid=3606, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 11:07:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-08-21 11:07:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 5007. [2021-08-21 11:07:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5007 states, 5006 states have (on average 2.7588893328006394) internal successors, (13811), 5006 states have internal predecessors, (13811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5007 states to 5007 states and 13811 transitions. [2021-08-21 11:07:41,810 INFO L78 Accepts]: Start accepts. Automaton has 5007 states and 13811 transitions. Word has length 62 [2021-08-21 11:07:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:41,810 INFO L470 AbstractCegarLoop]: Abstraction has 5007 states and 13811 transitions. [2021-08-21 11:07:41,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5007 states and 13811 transitions. [2021-08-21 11:07:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:41,815 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:41,815 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:41,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-08-21 11:07:42,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-08-21 11:07:42,016 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1292985753, now seen corresponding path program 49 times [2021-08-21 11:07:42,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:42,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839279085] [2021-08-21 11:07:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:42,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:42,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:42,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839279085] [2021-08-21 11:07:42,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839279085] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:42,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513224386] [2021-08-21 11:07:42,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:07:42,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:42,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:42,119 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:42,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-08-21 11:07:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:45,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:45,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:45,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513224386] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:45,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:45,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:45,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177891706] [2021-08-21 11:07:45,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:45,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:45,580 INFO L87 Difference]: Start difference. First operand 5007 states and 13811 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:46,341 INFO L93 Difference]: Finished difference Result 8673 states and 23025 transitions. [2021-08-21 11:07:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 11:07:46,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:46,352 INFO L225 Difference]: With dead ends: 8673 [2021-08-21 11:07:46,353 INFO L226 Difference]: Without dead ends: 8521 [2021-08-21 11:07:46,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 692.1ms TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:07:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8521 states. [2021-08-21 11:07:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8521 to 5247. [2021-08-21 11:07:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 2.7756385817765916) internal successors, (14561), 5246 states have internal predecessors, (14561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 14561 transitions. [2021-08-21 11:07:46,427 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 14561 transitions. Word has length 62 [2021-08-21 11:07:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:46,427 INFO L470 AbstractCegarLoop]: Abstraction has 5247 states and 14561 transitions. [2021-08-21 11:07:46,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 14561 transitions. [2021-08-21 11:07:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:46,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:46,432 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:46,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-08-21 11:07:46,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:46,632 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash -633413013, now seen corresponding path program 50 times [2021-08-21 11:07:46,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:46,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130437388] [2021-08-21 11:07:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:46,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:46,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:46,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130437388] [2021-08-21 11:07:46,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130437388] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:46,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678754333] [2021-08-21 11:07:46,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:07:46,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:46,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:46,748 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:46,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-08-21 11:07:49,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:07:49,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:49,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:49,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:50,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678754333] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:50,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:50,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:50,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827937526] [2021-08-21 11:07:50,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:50,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:50,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:50,282 INFO L87 Difference]: Start difference. First operand 5247 states and 14561 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:51,468 INFO L93 Difference]: Finished difference Result 10833 states and 28915 transitions. [2021-08-21 11:07:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 11:07:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:51,482 INFO L225 Difference]: With dead ends: 10833 [2021-08-21 11:07:51,482 INFO L226 Difference]: Without dead ends: 10275 [2021-08-21 11:07:51,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 1051.5ms TimeCoverageRelationStatistics Valid=972, Invalid=3318, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 11:07:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10275 states. [2021-08-21 11:07:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10275 to 4834. [2021-08-21 11:07:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 2.7541899441340782) internal successors, (13311), 4833 states have internal predecessors, (13311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 13311 transitions. [2021-08-21 11:07:51,556 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 13311 transitions. Word has length 62 [2021-08-21 11:07:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:51,556 INFO L470 AbstractCegarLoop]: Abstraction has 4834 states and 13311 transitions. [2021-08-21 11:07:51,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 13311 transitions. [2021-08-21 11:07:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:51,560 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:51,560 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:51,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-08-21 11:07:51,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:51,761 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1391689779, now seen corresponding path program 51 times [2021-08-21 11:07:51,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:51,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135454776] [2021-08-21 11:07:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:51,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:51,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:51,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135454776] [2021-08-21 11:07:51,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135454776] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:51,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730135277] [2021-08-21 11:07:51,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:07:51,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:51,953 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:51,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-08-21 11:07:55,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:07:55,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:55,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:55,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:07:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:55,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730135277] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:55,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:07:55,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:07:55,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229040521] [2021-08-21 11:07:55,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:07:55,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:07:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:07:55,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:07:55,535 INFO L87 Difference]: Start difference. First operand 4834 states and 13311 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:07:55,989 INFO L93 Difference]: Finished difference Result 7103 states and 18293 transitions. [2021-08-21 11:07:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:07:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:07:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:07:55,999 INFO L225 Difference]: With dead ends: 7103 [2021-08-21 11:07:55,999 INFO L226 Difference]: Without dead ends: 6951 [2021-08-21 11:07:56,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 488.9ms TimeCoverageRelationStatistics Valid=363, Invalid=1277, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 11:07:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2021-08-21 11:07:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 4809. [2021-08-21 11:07:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 2.7570715474209653) internal successors, (13256), 4808 states have internal predecessors, (13256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 13256 transitions. [2021-08-21 11:07:56,069 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 13256 transitions. Word has length 62 [2021-08-21 11:07:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:07:56,069 INFO L470 AbstractCegarLoop]: Abstraction has 4809 states and 13256 transitions. [2021-08-21 11:07:56,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:07:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 13256 transitions. [2021-08-21 11:07:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:07:56,073 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:07:56,074 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:07:56,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-08-21 11:07:56,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2021-08-21 11:07:56,274 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:07:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:07:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash 896489133, now seen corresponding path program 52 times [2021-08-21 11:07:56,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:07:56,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998874701] [2021-08-21 11:07:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:07:56,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:07:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:07:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:07:56,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:07:56,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998874701] [2021-08-21 11:07:56,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998874701] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:07:56,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864554747] [2021-08-21 11:07:56,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:07:56,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:07:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:07:56,404 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:07:56,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-08-21 11:07:59,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:07:59,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:07:59,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:07:59,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:00,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864554747] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:00,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:00,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:00,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2162466] [2021-08-21 11:08:00,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:00,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:00,012 INFO L87 Difference]: Start difference. First operand 4809 states and 13256 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:00,652 INFO L93 Difference]: Finished difference Result 8088 states and 20896 transitions. [2021-08-21 11:08:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:08:00,652 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:00,663 INFO L225 Difference]: With dead ends: 8088 [2021-08-21 11:08:00,663 INFO L226 Difference]: Without dead ends: 7936 [2021-08-21 11:08:00,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 584.5ms TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:08:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7936 states. [2021-08-21 11:08:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 4834. [2021-08-21 11:08:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 2.7728119180633146) internal successors, (13401), 4833 states have internal predecessors, (13401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 13401 transitions. [2021-08-21 11:08:00,730 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 13401 transitions. Word has length 62 [2021-08-21 11:08:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:00,731 INFO L470 AbstractCegarLoop]: Abstraction has 4834 states and 13401 transitions. [2021-08-21 11:08:00,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:00,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 13401 transitions. [2021-08-21 11:08:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:00,735 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:00,735 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:00,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-08-21 11:08:00,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:00,936 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash -229564685, now seen corresponding path program 53 times [2021-08-21 11:08:00,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:00,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515490359] [2021-08-21 11:08:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:00,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:01,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:01,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515490359] [2021-08-21 11:08:01,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515490359] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:01,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518092313] [2021-08-21 11:08:01,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:08:01,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:01,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:01,064 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:01,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-08-21 11:08:04,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:08:04,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:04,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:04,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518092313] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:04,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:04,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:04,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922347709] [2021-08-21 11:08:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:04,680 INFO L87 Difference]: Start difference. First operand 4834 states and 13401 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:05,401 INFO L93 Difference]: Finished difference Result 8651 states and 23062 transitions. [2021-08-21 11:08:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 11:08:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:05,414 INFO L225 Difference]: With dead ends: 8651 [2021-08-21 11:08:05,414 INFO L226 Difference]: Without dead ends: 8499 [2021-08-21 11:08:05,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 656.0ms TimeCoverageRelationStatistics Valid=548, Invalid=1804, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:08:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2021-08-21 11:08:05,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 5044. [2021-08-21 11:08:05,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5044 states, 5043 states have (on average 2.7792980368828077) internal successors, (14016), 5043 states have internal predecessors, (14016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 14016 transitions. [2021-08-21 11:08:05,500 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 14016 transitions. Word has length 62 [2021-08-21 11:08:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:05,500 INFO L470 AbstractCegarLoop]: Abstraction has 5044 states and 14016 transitions. [2021-08-21 11:08:05,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 14016 transitions. [2021-08-21 11:08:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:05,505 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:05,505 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:05,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-08-21 11:08:05,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:05,705 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 430008055, now seen corresponding path program 54 times [2021-08-21 11:08:05,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:05,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198409926] [2021-08-21 11:08:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:05,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:05,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:05,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198409926] [2021-08-21 11:08:05,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198409926] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:05,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173119435] [2021-08-21 11:08:05,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:08:05,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:05,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:05,817 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:05,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-08-21 11:08:09,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:08:09,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:09,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:09,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173119435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:09,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:09,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:09,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829200821] [2021-08-21 11:08:09,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:09,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:09,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:09,567 INFO L87 Difference]: Start difference. First operand 5044 states and 14016 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:10,629 INFO L93 Difference]: Finished difference Result 10880 states and 29070 transitions. [2021-08-21 11:08:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 11:08:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:10,643 INFO L225 Difference]: With dead ends: 10880 [2021-08-21 11:08:10,643 INFO L226 Difference]: Without dead ends: 10322 [2021-08-21 11:08:10,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 958.1ms TimeCoverageRelationStatistics Valid=861, Invalid=3171, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 11:08:10,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-08-21 11:08:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 4639. [2021-08-21 11:08:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 4638 states have (on average 2.738680465717982) internal successors, (12702), 4638 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 12702 transitions. [2021-08-21 11:08:10,722 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 12702 transitions. Word has length 62 [2021-08-21 11:08:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:10,722 INFO L470 AbstractCegarLoop]: Abstraction has 4639 states and 12702 transitions. [2021-08-21 11:08:10,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 12702 transitions. [2021-08-21 11:08:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:10,726 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:10,726 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:10,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-08-21 11:08:10,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:10,927 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash -227142561, now seen corresponding path program 55 times [2021-08-21 11:08:10,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:10,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517335579] [2021-08-21 11:08:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:10,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:11,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:11,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517335579] [2021-08-21 11:08:11,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517335579] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:11,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689450253] [2021-08-21 11:08:11,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:08:11,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:11,080 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:11,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-08-21 11:08:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:14,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:14,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689450253] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:14,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:14,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:14,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656258023] [2021-08-21 11:08:14,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:14,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:14,872 INFO L87 Difference]: Start difference. First operand 4639 states and 12702 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:15,450 INFO L93 Difference]: Finished difference Result 7930 states and 20061 transitions. [2021-08-21 11:08:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 11:08:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:15,461 INFO L225 Difference]: With dead ends: 7930 [2021-08-21 11:08:15,462 INFO L226 Difference]: Without dead ends: 7778 [2021-08-21 11:08:15,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 542.5ms TimeCoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:08:15,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2021-08-21 11:08:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 4869. [2021-08-21 11:08:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4868 states have (on average 2.750205423171734) internal successors, (13388), 4868 states have internal predecessors, (13388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 13388 transitions. [2021-08-21 11:08:15,532 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 13388 transitions. Word has length 62 [2021-08-21 11:08:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:15,532 INFO L470 AbstractCegarLoop]: Abstraction has 4869 states and 13388 transitions. [2021-08-21 11:08:15,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 13388 transitions. [2021-08-21 11:08:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:15,537 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:15,537 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:15,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-08-21 11:08:15,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-08-21 11:08:15,738 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash -602843055, now seen corresponding path program 56 times [2021-08-21 11:08:15,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:15,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913569067] [2021-08-21 11:08:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:15,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:15,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:15,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913569067] [2021-08-21 11:08:15,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913569067] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:15,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039053000] [2021-08-21 11:08:15,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:08:15,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:15,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:15,851 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:15,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-08-21 11:08:19,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:08:19,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:19,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:19,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039053000] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:19,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:19,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:19,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256612773] [2021-08-21 11:08:19,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:19,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:19,553 INFO L87 Difference]: Start difference. First operand 4869 states and 13388 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:20,196 INFO L93 Difference]: Finished difference Result 8269 states and 20746 transitions. [2021-08-21 11:08:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 11:08:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:20,207 INFO L225 Difference]: With dead ends: 8269 [2021-08-21 11:08:20,207 INFO L226 Difference]: Without dead ends: 8117 [2021-08-21 11:08:20,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 581.1ms TimeCoverageRelationStatistics Valid=523, Invalid=1733, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:08:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2021-08-21 11:08:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 4934. [2021-08-21 11:08:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 2.7429556051084534) internal successors, (13531), 4933 states have internal predecessors, (13531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 13531 transitions. [2021-08-21 11:08:20,283 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 13531 transitions. Word has length 62 [2021-08-21 11:08:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:20,283 INFO L470 AbstractCegarLoop]: Abstraction has 4934 states and 13531 transitions. [2021-08-21 11:08:20,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 13531 transitions. [2021-08-21 11:08:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:20,287 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:20,288 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:20,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-08-21 11:08:20,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-08-21 11:08:20,488 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:20,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1613656697, now seen corresponding path program 57 times [2021-08-21 11:08:20,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:20,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885107020] [2021-08-21 11:08:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:20,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:20,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:20,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885107020] [2021-08-21 11:08:20,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885107020] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:20,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455352642] [2021-08-21 11:08:20,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:08:20,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:20,605 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:20,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-08-21 11:08:24,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:08:24,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:24,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:24,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455352642] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:24,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:24,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:24,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001889622] [2021-08-21 11:08:24,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:24,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:24,516 INFO L87 Difference]: Start difference. First operand 4934 states and 13531 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:25,199 INFO L93 Difference]: Finished difference Result 8389 states and 21412 transitions. [2021-08-21 11:08:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 11:08:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:25,210 INFO L225 Difference]: With dead ends: 8389 [2021-08-21 11:08:25,210 INFO L226 Difference]: Without dead ends: 8237 [2021-08-21 11:08:25,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 630.1ms TimeCoverageRelationStatistics Valid=599, Invalid=2053, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:08:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2021-08-21 11:08:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 5064. [2021-08-21 11:08:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5064 states, 5063 states have (on average 2.755678451510962) internal successors, (13952), 5063 states have internal predecessors, (13952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 13952 transitions. [2021-08-21 11:08:25,280 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 13952 transitions. Word has length 62 [2021-08-21 11:08:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:25,281 INFO L470 AbstractCegarLoop]: Abstraction has 5064 states and 13952 transitions. [2021-08-21 11:08:25,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 13952 transitions. [2021-08-21 11:08:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:25,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:25,285 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:25,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-08-21 11:08:25,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-08-21 11:08:25,486 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1989357191, now seen corresponding path program 58 times [2021-08-21 11:08:25,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:25,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427054992] [2021-08-21 11:08:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:25,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:25,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:25,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427054992] [2021-08-21 11:08:25,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427054992] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:25,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969494571] [2021-08-21 11:08:25,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:08:25,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:25,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:25,596 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:25,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-08-21 11:08:29,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:08:29,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:29,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:29,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:29,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969494571] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:29,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:29,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:29,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476342049] [2021-08-21 11:08:29,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:29,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:29,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:29,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:29,487 INFO L87 Difference]: Start difference. First operand 5064 states and 13952 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:30,104 INFO L93 Difference]: Finished difference Result 8669 states and 22084 transitions. [2021-08-21 11:08:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 11:08:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:30,115 INFO L225 Difference]: With dead ends: 8669 [2021-08-21 11:08:30,115 INFO L226 Difference]: Without dead ends: 8517 [2021-08-21 11:08:30,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 561.3ms TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:08:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2021-08-21 11:08:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 5159. [2021-08-21 11:08:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 2.7669639395114385) internal successors, (14272), 5158 states have internal predecessors, (14272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 14272 transitions. [2021-08-21 11:08:30,185 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 14272 transitions. Word has length 62 [2021-08-21 11:08:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:30,185 INFO L470 AbstractCegarLoop]: Abstraction has 5159 states and 14272 transitions. [2021-08-21 11:08:30,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 14272 transitions. [2021-08-21 11:08:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:30,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:30,190 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:30,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-08-21 11:08:30,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-08-21 11:08:30,391 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash -240583841, now seen corresponding path program 59 times [2021-08-21 11:08:30,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:30,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527816061] [2021-08-21 11:08:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:30,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:30,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:30,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527816061] [2021-08-21 11:08:30,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527816061] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:30,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066219288] [2021-08-21 11:08:30,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:08:30,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:30,504 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:30,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-08-21 11:08:33,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:08:33,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:33,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:33,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066219288] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:34,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814082798] [2021-08-21 11:08:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:34,372 INFO L87 Difference]: Start difference. First operand 5159 states and 14272 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:35,030 INFO L93 Difference]: Finished difference Result 8898 states and 23168 transitions. [2021-08-21 11:08:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 11:08:35,031 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:35,044 INFO L225 Difference]: With dead ends: 8898 [2021-08-21 11:08:35,044 INFO L226 Difference]: Without dead ends: 8746 [2021-08-21 11:08:35,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 609.9ms TimeCoverageRelationStatistics Valid=604, Invalid=2048, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:08:35,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2021-08-21 11:08:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 5264. [2021-08-21 11:08:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 2.7813034391031732) internal successors, (14638), 5263 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 14638 transitions. [2021-08-21 11:08:35,132 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 14638 transitions. Word has length 62 [2021-08-21 11:08:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:35,132 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 14638 transitions. [2021-08-21 11:08:35,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 14638 transitions. [2021-08-21 11:08:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:35,137 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:35,137 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:35,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-08-21 11:08:35,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:35,337 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:35,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1366637659, now seen corresponding path program 60 times [2021-08-21 11:08:35,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:35,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471848995] [2021-08-21 11:08:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:35,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:35,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:35,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471848995] [2021-08-21 11:08:35,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471848995] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:35,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804079514] [2021-08-21 11:08:35,455 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:08:35,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:35,456 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:35,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-08-21 11:08:38,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-21 11:08:38,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:38,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:38,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:39,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804079514] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:39,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:39,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:39,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908347986] [2021-08-21 11:08:39,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:39,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:39,365 INFO L87 Difference]: Start difference. First operand 5264 states and 14638 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:40,076 INFO L93 Difference]: Finished difference Result 9336 states and 24862 transitions. [2021-08-21 11:08:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 11:08:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:40,088 INFO L225 Difference]: With dead ends: 9336 [2021-08-21 11:08:40,088 INFO L226 Difference]: Without dead ends: 9184 [2021-08-21 11:08:40,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 648.3ms TimeCoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 11:08:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9184 states. [2021-08-21 11:08:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9184 to 5384. [2021-08-21 11:08:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 5383 states have (on average 2.7889652610068736) internal successors, (15013), 5383 states have internal predecessors, (15013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 15013 transitions. [2021-08-21 11:08:40,166 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 15013 transitions. Word has length 62 [2021-08-21 11:08:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:40,166 INFO L470 AbstractCegarLoop]: Abstraction has 5384 states and 15013 transitions. [2021-08-21 11:08:40,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 15013 transitions. [2021-08-21 11:08:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:40,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:40,171 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:40,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-08-21 11:08:40,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:40,372 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:40,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash -707064919, now seen corresponding path program 61 times [2021-08-21 11:08:40,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:40,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258309767] [2021-08-21 11:08:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:40,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:40,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:40,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258309767] [2021-08-21 11:08:40,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258309767] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:40,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487331714] [2021-08-21 11:08:40,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:08:40,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:40,487 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:40,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-08-21 11:08:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:44,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:44,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:44,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487331714] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:44,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:44,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:44,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148360573] [2021-08-21 11:08:44,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:44,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:44,483 INFO L87 Difference]: Start difference. First operand 5384 states and 15013 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:45,504 INFO L93 Difference]: Finished difference Result 11875 states and 31630 transitions. [2021-08-21 11:08:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 11:08:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:45,520 INFO L225 Difference]: With dead ends: 11875 [2021-08-21 11:08:45,520 INFO L226 Difference]: Without dead ends: 11269 [2021-08-21 11:08:45,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 915.0ms TimeCoverageRelationStatistics Valid=887, Invalid=3273, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 11:08:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2021-08-21 11:08:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 5316. [2021-08-21 11:08:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 2.760489181561618) internal successors, (14672), 5315 states have internal predecessors, (14672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 14672 transitions. [2021-08-21 11:08:45,614 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 14672 transitions. Word has length 62 [2021-08-21 11:08:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:45,614 INFO L470 AbstractCegarLoop]: Abstraction has 5316 states and 14672 transitions. [2021-08-21 11:08:45,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 14672 transitions. [2021-08-21 11:08:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:45,618 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:45,619 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:45,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-08-21 11:08:45,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:45,819 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -128451085, now seen corresponding path program 62 times [2021-08-21 11:08:45,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:45,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380447798] [2021-08-21 11:08:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:45,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:45,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:45,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380447798] [2021-08-21 11:08:45,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380447798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:45,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506454696] [2021-08-21 11:08:45,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:08:45,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:45,931 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:45,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-08-21 11:08:49,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:08:49,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:49,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:49,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506454696] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:49,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:49,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:49,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626207074] [2021-08-21 11:08:49,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:49,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:49,925 INFO L87 Difference]: Start difference. First operand 5316 states and 14672 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:50,868 INFO L93 Difference]: Finished difference Result 9748 states and 25947 transitions. [2021-08-21 11:08:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 11:08:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:50,882 INFO L225 Difference]: With dead ends: 9748 [2021-08-21 11:08:50,882 INFO L226 Difference]: Without dead ends: 9596 [2021-08-21 11:08:50,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 844.1ms TimeCoverageRelationStatistics Valid=855, Invalid=2805, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 11:08:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2021-08-21 11:08:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 5631. [2021-08-21 11:08:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5631 states, 5630 states have (on average 2.7845470692717584) internal successors, (15677), 5630 states have internal predecessors, (15677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 15677 transitions. [2021-08-21 11:08:50,974 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 15677 transitions. Word has length 62 [2021-08-21 11:08:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:50,975 INFO L470 AbstractCegarLoop]: Abstraction has 5631 states and 15677 transitions. [2021-08-21 11:08:50,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 15677 transitions. [2021-08-21 11:08:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:50,980 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:50,980 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:51,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-08-21 11:08:51,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:51,182 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash 531121655, now seen corresponding path program 63 times [2021-08-21 11:08:51,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:51,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379705615] [2021-08-21 11:08:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:51,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:51,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:51,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379705615] [2021-08-21 11:08:51,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379705615] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:51,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398099264] [2021-08-21 11:08:51,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:08:51,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:51,308 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:51,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-08-21 11:08:54,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:08:54,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:08:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:08:54,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:08:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:55,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398099264] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:55,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:08:55,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:08:55,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721699667] [2021-08-21 11:08:55,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:08:55,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:08:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:08:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:08:55,357 INFO L87 Difference]: Start difference. First operand 5631 states and 15677 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:08:56,545 INFO L93 Difference]: Finished difference Result 11698 states and 31387 transitions. [2021-08-21 11:08:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 11:08:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:08:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:08:56,558 INFO L225 Difference]: With dead ends: 11698 [2021-08-21 11:08:56,558 INFO L226 Difference]: Without dead ends: 11140 [2021-08-21 11:08:56,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1918 ImplicationChecksByTransitivity, 1044.7ms TimeCoverageRelationStatistics Valid=1206, Invalid=4344, Unknown=0, NotChecked=0, Total=5550 [2021-08-21 11:08:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2021-08-21 11:08:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 5246. [2021-08-21 11:08:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 2.7639656816015252) internal successors, (14497), 5245 states have internal predecessors, (14497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 14497 transitions. [2021-08-21 11:08:56,633 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 14497 transitions. Word has length 62 [2021-08-21 11:08:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:08:56,633 INFO L470 AbstractCegarLoop]: Abstraction has 5246 states and 14497 transitions. [2021-08-21 11:08:56,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:08:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 14497 transitions. [2021-08-21 11:08:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:08:56,638 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:08:56,638 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:08:56,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-08-21 11:08:56,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:56,838 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:08:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:08:56,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1042940369, now seen corresponding path program 64 times [2021-08-21 11:08:56,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:08:56,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003275993] [2021-08-21 11:08:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:08:56,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:08:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:08:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:08:56,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:08:56,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003275993] [2021-08-21 11:08:56,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003275993] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:08:56,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9329513] [2021-08-21 11:08:56,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:08:56,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:08:56,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:08:56,953 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:08:56,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-08-21 11:09:00,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:09:00,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:00,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:00,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:01,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9329513] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:01,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:01,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:09:01,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401331724] [2021-08-21 11:09:01,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:09:01,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:09:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:09:01,113 INFO L87 Difference]: Start difference. First operand 5246 states and 14497 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:02,081 INFO L93 Difference]: Finished difference Result 10008 states and 25812 transitions. [2021-08-21 11:09:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 11:09:02,081 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:02,094 INFO L225 Difference]: With dead ends: 10008 [2021-08-21 11:09:02,094 INFO L226 Difference]: Without dead ends: 9856 [2021-08-21 11:09:02,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 887.2ms TimeCoverageRelationStatistics Valid=884, Invalid=2776, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 11:09:02,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9856 states. [2021-08-21 11:09:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9856 to 5296. [2021-08-21 11:09:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 2.7756373937677052) internal successors, (14697), 5295 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 14697 transitions. [2021-08-21 11:09:02,178 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 14697 transitions. Word has length 62 [2021-08-21 11:09:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:02,178 INFO L470 AbstractCegarLoop]: Abstraction has 5296 states and 14697 transitions. [2021-08-21 11:09:02,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 14697 transitions. [2021-08-21 11:09:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:02,182 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:02,183 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:02,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-08-21 11:09:02,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-08-21 11:09:02,383 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:02,383 INFO L82 PathProgramCache]: Analyzing trace with hash -83113449, now seen corresponding path program 65 times [2021-08-21 11:09:02,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:02,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899947793] [2021-08-21 11:09:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:02,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:02,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:02,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899947793] [2021-08-21 11:09:02,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899947793] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:02,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370108961] [2021-08-21 11:09:02,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:09:02,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:02,496 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:02,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-08-21 11:09:06,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:09:06,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:06,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:06,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:06,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370108961] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:06,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:06,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:09:06,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956801514] [2021-08-21 11:09:06,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:09:06,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:09:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:09:06,615 INFO L87 Difference]: Start difference. First operand 5296 states and 14697 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:07,544 INFO L93 Difference]: Finished difference Result 10060 states and 26759 transitions. [2021-08-21 11:09:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 11:09:07,544 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:07,558 INFO L225 Difference]: With dead ends: 10060 [2021-08-21 11:09:07,559 INFO L226 Difference]: Without dead ends: 9908 [2021-08-21 11:09:07,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 842.0ms TimeCoverageRelationStatistics Valid=782, Invalid=2524, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 11:09:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2021-08-21 11:09:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 5416. [2021-08-21 11:09:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5416 states, 5415 states have (on average 2.7833795013850415) internal successors, (15072), 5415 states have internal predecessors, (15072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 15072 transitions. [2021-08-21 11:09:07,657 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 15072 transitions. Word has length 62 [2021-08-21 11:09:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:07,657 INFO L470 AbstractCegarLoop]: Abstraction has 5416 states and 15072 transitions. [2021-08-21 11:09:07,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 15072 transitions. [2021-08-21 11:09:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:07,662 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:07,662 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:07,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-08-21 11:09:07,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-08-21 11:09:07,862 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash 576459291, now seen corresponding path program 66 times [2021-08-21 11:09:07,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:07,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477178651] [2021-08-21 11:09:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:07,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:08,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:08,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477178651] [2021-08-21 11:09:08,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477178651] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:08,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481761122] [2021-08-21 11:09:08,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:09:08,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:08,015 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:08,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-08-21 11:09:11,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-21 11:09:11,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:11,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:11,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:12,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481761122] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:12,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:09:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619204055] [2021-08-21 11:09:12,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:09:12,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:09:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:09:12,290 INFO L87 Difference]: Start difference. First operand 5416 states and 15072 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:13,728 INFO L93 Difference]: Finished difference Result 12240 states and 32784 transitions. [2021-08-21 11:09:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-08-21 11:09:13,729 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:13,745 INFO L225 Difference]: With dead ends: 12240 [2021-08-21 11:09:13,745 INFO L226 Difference]: Without dead ends: 11682 [2021-08-21 11:09:13,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 1284.0ms TimeCoverageRelationStatistics Valid=1196, Invalid=4206, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 11:09:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11682 states. [2021-08-21 11:09:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11682 to 5316. [2021-08-21 11:09:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 2.7650047036688616) internal successors, (14696), 5315 states have internal predecessors, (14696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 14696 transitions. [2021-08-21 11:09:13,848 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 14696 transitions. Word has length 62 [2021-08-21 11:09:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:13,848 INFO L470 AbstractCegarLoop]: Abstraction has 5316 states and 14696 transitions. [2021-08-21 11:09:13,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 14696 transitions. [2021-08-21 11:09:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:13,853 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:13,853 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:13,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-08-21 11:09:14,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:14,055 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:14,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2145924133, now seen corresponding path program 67 times [2021-08-21 11:09:14,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:14,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783593318] [2021-08-21 11:09:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:14,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:14,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:14,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783593318] [2021-08-21 11:09:14,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783593318] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:14,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224660285] [2021-08-21 11:09:14,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:09:14,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:14,184 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:14,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-08-21 11:09:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:17,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:17,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:18,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224660285] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:18,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:18,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:09:18,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866373820] [2021-08-21 11:09:18,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:09:18,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:09:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:09:18,376 INFO L87 Difference]: Start difference. First operand 5316 states and 14696 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:19,394 INFO L93 Difference]: Finished difference Result 10669 states and 28841 transitions. [2021-08-21 11:09:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 11:09:19,394 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:19,409 INFO L225 Difference]: With dead ends: 10669 [2021-08-21 11:09:19,409 INFO L226 Difference]: Without dead ends: 10287 [2021-08-21 11:09:19,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 934.7ms TimeCoverageRelationStatistics Valid=894, Invalid=2766, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 11:09:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2021-08-21 11:09:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 5487. [2021-08-21 11:09:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 5486 states have (on average 2.7952971199416696) internal successors, (15335), 5486 states have internal predecessors, (15335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 15335 transitions. [2021-08-21 11:09:19,510 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 15335 transitions. Word has length 62 [2021-08-21 11:09:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:19,510 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 15335 transitions. [2021-08-21 11:09:19,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 15335 transitions. [2021-08-21 11:09:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:19,516 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:19,516 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:19,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-08-21 11:09:19,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:19,717 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:19,717 INFO L82 PathProgramCache]: Analyzing trace with hash 714868345, now seen corresponding path program 22 times [2021-08-21 11:09:19,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:19,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500176798] [2021-08-21 11:09:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:19,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:19,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:19,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500176798] [2021-08-21 11:09:19,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500176798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:19,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87669435] [2021-08-21 11:09:19,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:09:19,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:19,838 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:19,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-08-21 11:09:23,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:09:23,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:23,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:23,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:24,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87669435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:24,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:24,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:09:24,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679016013] [2021-08-21 11:09:24,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:09:24,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:09:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:09:24,160 INFO L87 Difference]: Start difference. First operand 5487 states and 15335 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:24,619 INFO L93 Difference]: Finished difference Result 7936 states and 20716 transitions. [2021-08-21 11:09:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:09:24,620 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:24,630 INFO L225 Difference]: With dead ends: 7936 [2021-08-21 11:09:24,631 INFO L226 Difference]: Without dead ends: 7784 [2021-08-21 11:09:24,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 461.8ms TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 11:09:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2021-08-21 11:09:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 5525. [2021-08-21 11:09:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 5524 states have (on average 2.796524257784214) internal successors, (15448), 5524 states have internal predecessors, (15448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 15448 transitions. [2021-08-21 11:09:24,728 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 15448 transitions. Word has length 62 [2021-08-21 11:09:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:24,728 INFO L470 AbstractCegarLoop]: Abstraction has 5525 states and 15448 transitions. [2021-08-21 11:09:24,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 15448 transitions. [2021-08-21 11:09:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:24,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:24,733 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:24,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-08-21 11:09:24,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:24,935 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:24,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1051206445, now seen corresponding path program 23 times [2021-08-21 11:09:24,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:24,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962585537] [2021-08-21 11:09:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:24,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:25,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:25,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962585537] [2021-08-21 11:09:25,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962585537] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:25,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624959537] [2021-08-21 11:09:25,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:09:25,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:25,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:25,092 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:25,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-08-21 11:09:28,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:09:28,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:29,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624959537] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:29,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:29,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:09:29,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534514644] [2021-08-21 11:09:29,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:09:29,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:09:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:09:29,356 INFO L87 Difference]: Start difference. First operand 5525 states and 15448 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:29,909 INFO L93 Difference]: Finished difference Result 7985 states and 20864 transitions. [2021-08-21 11:09:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 11:09:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:29,919 INFO L225 Difference]: With dead ends: 7985 [2021-08-21 11:09:29,919 INFO L226 Difference]: Without dead ends: 7833 [2021-08-21 11:09:29,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 502.9ms TimeCoverageRelationStatistics Valid=465, Invalid=1605, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:09:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2021-08-21 11:09:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 5545. [2021-08-21 11:09:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 5544 states have (on average 2.798160173160173) internal successors, (15513), 5544 states have internal predecessors, (15513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 15513 transitions. [2021-08-21 11:09:29,995 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 15513 transitions. Word has length 62 [2021-08-21 11:09:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:29,995 INFO L470 AbstractCegarLoop]: Abstraction has 5545 states and 15513 transitions. [2021-08-21 11:09:29,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:29,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 15513 transitions. [2021-08-21 11:09:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:30,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:30,000 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:30,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-08-21 11:09:30,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:30,202 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash 310502905, now seen corresponding path program 24 times [2021-08-21 11:09:30,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:30,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875824346] [2021-08-21 11:09:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:30,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:30,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:30,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875824346] [2021-08-21 11:09:30,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875824346] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:30,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366640120] [2021-08-21 11:09:30,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:09:30,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:30,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:30,315 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:30,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-08-21 11:09:34,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-21 11:09:34,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:34,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:34,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:34,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366640120] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:34,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:34,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:09:34,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053668965] [2021-08-21 11:09:34,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:09:34,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:09:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:09:34,664 INFO L87 Difference]: Start difference. First operand 5545 states and 15513 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:35,298 INFO L93 Difference]: Finished difference Result 8325 states and 21842 transitions. [2021-08-21 11:09:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 11:09:35,299 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:35,311 INFO L225 Difference]: With dead ends: 8325 [2021-08-21 11:09:35,311 INFO L226 Difference]: Without dead ends: 8173 [2021-08-21 11:09:35,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 591.2ms TimeCoverageRelationStatistics Valid=610, Invalid=2042, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:09:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2021-08-21 11:09:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 5437. [2021-08-21 11:09:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 2.8007726269315674) internal successors, (15225), 5436 states have internal predecessors, (15225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 15225 transitions. [2021-08-21 11:09:35,392 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 15225 transitions. Word has length 62 [2021-08-21 11:09:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:35,392 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 15225 transitions. [2021-08-21 11:09:35,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 15225 transitions. [2021-08-21 11:09:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:35,398 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:35,398 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:35,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-08-21 11:09:35,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-08-21 11:09:35,617 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:35,617 INFO L82 PathProgramCache]: Analyzing trace with hash -277572691, now seen corresponding path program 25 times [2021-08-21 11:09:35,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:35,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627687379] [2021-08-21 11:09:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:35,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:35,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:35,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627687379] [2021-08-21 11:09:35,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627687379] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:35,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914490441] [2021-08-21 11:09:35,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:09:35,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:35,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:35,737 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:35,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-08-21 11:09:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:39,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:39,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:40,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914490441] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:40,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:40,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:09:40,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465039295] [2021-08-21 11:09:40,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:09:40,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:09:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:09:40,389 INFO L87 Difference]: Start difference. First operand 5437 states and 15225 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:41,125 INFO L93 Difference]: Finished difference Result 8562 states and 22765 transitions. [2021-08-21 11:09:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 11:09:41,126 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:41,139 INFO L225 Difference]: With dead ends: 8562 [2021-08-21 11:09:41,139 INFO L226 Difference]: Without dead ends: 8258 [2021-08-21 11:09:41,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 658.1ms TimeCoverageRelationStatistics Valid=704, Invalid=2376, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:09:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8258 states. [2021-08-21 11:09:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8258 to 5482. [2021-08-21 11:09:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 5481 states have (on average 2.799671592775041) internal successors, (15345), 5481 states have internal predecessors, (15345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 15345 transitions. [2021-08-21 11:09:41,219 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 15345 transitions. Word has length 62 [2021-08-21 11:09:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:41,219 INFO L470 AbstractCegarLoop]: Abstraction has 5482 states and 15345 transitions. [2021-08-21 11:09:41,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:41,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 15345 transitions. [2021-08-21 11:09:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:41,225 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:41,225 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:41,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-08-21 11:09:41,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-08-21 11:09:41,426 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash 382000049, now seen corresponding path program 26 times [2021-08-21 11:09:41,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:41,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670356607] [2021-08-21 11:09:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:41,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:41,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:41,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670356607] [2021-08-21 11:09:41,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670356607] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:41,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193687258] [2021-08-21 11:09:41,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:09:41,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:41,554 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:41,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-08-21 11:09:45,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:09:45,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:45,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:45,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:45,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193687258] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:45,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:45,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:09:45,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851638212] [2021-08-21 11:09:45,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:09:45,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:45,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:09:45,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:09:45,930 INFO L87 Difference]: Start difference. First operand 5482 states and 15345 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:47,088 INFO L93 Difference]: Finished difference Result 11298 states and 30075 transitions. [2021-08-21 11:09:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 11:09:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:47,103 INFO L225 Difference]: With dead ends: 11298 [2021-08-21 11:09:47,103 INFO L226 Difference]: Without dead ends: 10358 [2021-08-21 11:09:47,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 1042.5ms TimeCoverageRelationStatistics Valid=1132, Invalid=4270, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 11:09:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10358 states. [2021-08-21 11:09:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10358 to 5899. [2021-08-21 11:09:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5899 states, 5898 states have (on average 2.7948457104103084) internal successors, (16484), 5898 states have internal predecessors, (16484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5899 states to 5899 states and 16484 transitions. [2021-08-21 11:09:47,200 INFO L78 Accepts]: Start accepts. Automaton has 5899 states and 16484 transitions. Word has length 62 [2021-08-21 11:09:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:47,200 INFO L470 AbstractCegarLoop]: Abstraction has 5899 states and 16484 transitions. [2021-08-21 11:09:47,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5899 states and 16484 transitions. [2021-08-21 11:09:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:47,205 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:47,205 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:47,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-08-21 11:09:47,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-08-21 11:09:47,406 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1060539167, now seen corresponding path program 68 times [2021-08-21 11:09:47,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:47,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453688984] [2021-08-21 11:09:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:47,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:47,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:47,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453688984] [2021-08-21 11:09:47,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453688984] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:47,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480879184] [2021-08-21 11:09:47,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:09:47,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:47,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:47,525 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:47,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-08-21 11:09:51,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:09:51,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:51,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:52,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480879184] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:52,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:52,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:09:52,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746111275] [2021-08-21 11:09:52,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:09:52,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:09:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:09:52,149 INFO L87 Difference]: Start difference. First operand 5899 states and 16484 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:52,564 INFO L93 Difference]: Finished difference Result 8298 states and 21696 transitions. [2021-08-21 11:09:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:09:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:52,576 INFO L225 Difference]: With dead ends: 8298 [2021-08-21 11:09:52,576 INFO L226 Difference]: Without dead ends: 8146 [2021-08-21 11:09:52,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 419.3ms TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:09:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2021-08-21 11:09:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 5874. [2021-08-21 11:09:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5873 states have (on average 2.797377830750894) internal successors, (16429), 5873 states have internal predecessors, (16429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 16429 transitions. [2021-08-21 11:09:52,648 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 16429 transitions. Word has length 62 [2021-08-21 11:09:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:52,648 INFO L470 AbstractCegarLoop]: Abstraction has 5874 states and 16429 transitions. [2021-08-21 11:09:52,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 16429 transitions. [2021-08-21 11:09:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:52,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:52,653 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:52,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-08-21 11:09:52,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-08-21 11:09:52,854 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1134647527, now seen corresponding path program 69 times [2021-08-21 11:09:52,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:52,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186418150] [2021-08-21 11:09:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:52,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:52,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:52,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186418150] [2021-08-21 11:09:52,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186418150] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:52,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987682942] [2021-08-21 11:09:52,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:09:52,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:52,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:52,992 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:52,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-08-21 11:09:57,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:09:57,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:09:57,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:09:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:09:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:57,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987682942] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:57,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:09:57,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-21 11:09:57,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525247822] [2021-08-21 11:09:57,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-21 11:09:57,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:09:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-21 11:09:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-08-21 11:09:57,513 INFO L87 Difference]: Start difference. First operand 5874 states and 16429 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:09:58,502 INFO L93 Difference]: Finished difference Result 11271 states and 30586 transitions. [2021-08-21 11:09:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 11:09:58,502 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:09:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:09:58,518 INFO L225 Difference]: With dead ends: 11271 [2021-08-21 11:09:58,518 INFO L226 Difference]: Without dead ends: 10889 [2021-08-21 11:09:58,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 928.7ms TimeCoverageRelationStatistics Valid=772, Invalid=2420, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 11:09:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10889 states. [2021-08-21 11:09:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10889 to 6054. [2021-08-21 11:09:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 6053 states have (on average 2.8167850652568975) internal successors, (17050), 6053 states have internal predecessors, (17050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 17050 transitions. [2021-08-21 11:09:58,623 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 17050 transitions. Word has length 62 [2021-08-21 11:09:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:09:58,623 INFO L470 AbstractCegarLoop]: Abstraction has 6054 states and 17050 transitions. [2021-08-21 11:09:58,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:09:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 17050 transitions. [2021-08-21 11:09:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:09:58,629 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:09:58,629 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:09:58,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-08-21 11:09:58,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-08-21 11:09:58,830 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:09:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:09:58,830 INFO L82 PathProgramCache]: Analyzing trace with hash 489795979, now seen corresponding path program 70 times [2021-08-21 11:09:58,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:09:58,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878618696] [2021-08-21 11:09:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:09:58,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:09:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:09:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:09:58,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:09:58,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878618696] [2021-08-21 11:09:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878618696] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:09:58,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421271250] [2021-08-21 11:09:58,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:09:58,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:09:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:09:58,950 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:09:58,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-08-21 11:10:03,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:10:03,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:03,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:10:03,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:03,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421271250] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:03,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:03,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:10:03,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203624721] [2021-08-21 11:10:03,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:10:03,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:10:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:10:03,805 INFO L87 Difference]: Start difference. First operand 6054 states and 17050 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:04,367 INFO L93 Difference]: Finished difference Result 9075 states and 23657 transitions. [2021-08-21 11:10:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:10:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:10:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:04,381 INFO L225 Difference]: With dead ends: 9075 [2021-08-21 11:10:04,382 INFO L226 Difference]: Without dead ends: 8923 [2021-08-21 11:10:04,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 524.9ms TimeCoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 11:10:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8923 states. [2021-08-21 11:10:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8923 to 6097. [2021-08-21 11:10:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6097 states, 6096 states have (on average 2.817749343832021) internal successors, (17177), 6096 states have internal predecessors, (17177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6097 states to 6097 states and 17177 transitions. [2021-08-21 11:10:04,476 INFO L78 Accepts]: Start accepts. Automaton has 6097 states and 17177 transitions. Word has length 62 [2021-08-21 11:10:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:04,476 INFO L470 AbstractCegarLoop]: Abstraction has 6097 states and 17177 transitions. [2021-08-21 11:10:04,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6097 states and 17177 transitions. [2021-08-21 11:10:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:10:04,482 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:04,482 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:04,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-08-21 11:10:04,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:04,683 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:04,683 INFO L82 PathProgramCache]: Analyzing trace with hash -250907561, now seen corresponding path program 71 times [2021-08-21 11:10:04,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:04,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778073549] [2021-08-21 11:10:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:04,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:04,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:04,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778073549] [2021-08-21 11:10:04,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778073549] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:04,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179449185] [2021-08-21 11:10:04,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:10:04,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:04,810 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:04,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-08-21 11:10:09,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:10:09,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:09,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:10:09,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:09,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179449185] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:09,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:09,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:10:09,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595184930] [2021-08-21 11:10:09,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:10:09,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:10:09,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:10:09,663 INFO L87 Difference]: Start difference. First operand 6097 states and 17177 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:10,388 INFO L93 Difference]: Finished difference Result 9285 states and 24477 transitions. [2021-08-21 11:10:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 11:10:10,389 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:10:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:10,402 INFO L225 Difference]: With dead ends: 9285 [2021-08-21 11:10:10,403 INFO L226 Difference]: Without dead ends: 9133 [2021-08-21 11:10:10,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 698.7ms TimeCoverageRelationStatistics Valid=532, Invalid=1918, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 11:10:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9133 states. [2021-08-21 11:10:10,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9133 to 6009. [2021-08-21 11:10:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.8219041278295607) internal successors, (16954), 6008 states have internal predecessors, (16954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16954 transitions. [2021-08-21 11:10:10,495 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16954 transitions. Word has length 62 [2021-08-21 11:10:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:10,496 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16954 transitions. [2021-08-21 11:10:10,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16954 transitions. [2021-08-21 11:10:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:10:10,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:10,502 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:10,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-08-21 11:10:10,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:10,703 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:10,703 INFO L82 PathProgramCache]: Analyzing trace with hash -838983157, now seen corresponding path program 72 times [2021-08-21 11:10:10,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:10,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928525824] [2021-08-21 11:10:10,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:10,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:10,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:10,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928525824] [2021-08-21 11:10:10,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928525824] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:10,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656937229] [2021-08-21 11:10:10,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:10:10,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:10,822 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:10,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-08-21 11:10:15,179 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:10:15,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:10:15,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:15,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656937229] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:15,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:15,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:10:15,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385619238] [2021-08-21 11:10:15,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:10:15,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:15,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:10:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:10:15,628 INFO L87 Difference]: Start difference. First operand 6009 states and 16954 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:16,408 INFO L93 Difference]: Finished difference Result 9575 states and 25712 transitions. [2021-08-21 11:10:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 11:10:16,409 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:10:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:16,423 INFO L225 Difference]: With dead ends: 9575 [2021-08-21 11:10:16,423 INFO L226 Difference]: Without dead ends: 9423 [2021-08-21 11:10:16,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 701.5ms TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:10:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9423 states. [2021-08-21 11:10:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9423 to 6237. [2021-08-21 11:10:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6237 states, 6236 states have (on average 2.8250481077613854) internal successors, (17617), 6236 states have internal predecessors, (17617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6237 states to 6237 states and 17617 transitions. [2021-08-21 11:10:16,518 INFO L78 Accepts]: Start accepts. Automaton has 6237 states and 17617 transitions. Word has length 62 [2021-08-21 11:10:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:16,519 INFO L470 AbstractCegarLoop]: Abstraction has 6237 states and 17617 transitions. [2021-08-21 11:10:16,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6237 states and 17617 transitions. [2021-08-21 11:10:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:10:16,524 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:16,524 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:16,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-08-21 11:10:16,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-08-21 11:10:16,730 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash -179410417, now seen corresponding path program 73 times [2021-08-21 11:10:16,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:16,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551477263] [2021-08-21 11:10:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:16,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:16,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:16,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551477263] [2021-08-21 11:10:16,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551477263] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:16,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887195068] [2021-08-21 11:10:16,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:10:16,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:16,845 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:16,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-08-21 11:10:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:21,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-21 11:10:21,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:21,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887195068] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:21,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:21,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-21 11:10:21,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601463157] [2021-08-21 11:10:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-21 11:10:21,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-21 11:10:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-08-21 11:10:21,641 INFO L87 Difference]: Start difference. First operand 6237 states and 17617 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:22,852 INFO L93 Difference]: Finished difference Result 11789 states and 31545 transitions. [2021-08-21 11:10:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 11:10:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-21 11:10:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:22,869 INFO L225 Difference]: With dead ends: 11789 [2021-08-21 11:10:22,869 INFO L226 Difference]: Without dead ends: 11231 [2021-08-21 11:10:22,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 1067.1ms TimeCoverageRelationStatistics Valid=984, Invalid=3708, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 11:10:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2021-08-21 11:10:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 5794. [2021-08-21 11:10:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5793 states have (on average 2.7983773519765234) internal successors, (16211), 5793 states have internal predecessors, (16211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 16211 transitions. [2021-08-21 11:10:22,969 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 16211 transitions. Word has length 62 [2021-08-21 11:10:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:22,969 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 16211 transitions. [2021-08-21 11:10:22,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 16211 transitions. [2021-08-21 11:10:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:22,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:22,975 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:23,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-08-21 11:10:23,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2021-08-21 11:10:23,175 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1097377418, now seen corresponding path program 74 times [2021-08-21 11:10:23,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:23,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393830245] [2021-08-21 11:10:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:23,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:23,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:23,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393830245] [2021-08-21 11:10:23,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393830245] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:23,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410219364] [2021-08-21 11:10:23,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:10:23,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:23,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:23,381 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:23,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-08-21 11:10:27,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:10:27,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:27,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:10:27,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:28,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410219364] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:28,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:28,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:10:28,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523724138] [2021-08-21 11:10:28,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:10:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:10:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:10:28,490 INFO L87 Difference]: Start difference. First operand 5794 states and 16211 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:28,904 INFO L93 Difference]: Finished difference Result 8197 states and 21451 transitions. [2021-08-21 11:10:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 11:10:28,905 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:10:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:28,917 INFO L225 Difference]: With dead ends: 8197 [2021-08-21 11:10:28,917 INFO L226 Difference]: Without dead ends: 8045 [2021-08-21 11:10:28,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 470.8ms TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:10:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-08-21 11:10:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 5984. [2021-08-21 11:10:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 2.779374895537356) internal successors, (16629), 5983 states have internal predecessors, (16629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 16629 transitions. [2021-08-21 11:10:29,001 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 16629 transitions. Word has length 67 [2021-08-21 11:10:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:29,001 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 16629 transitions. [2021-08-21 11:10:29,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 16629 transitions. [2021-08-21 11:10:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:29,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:29,007 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:29,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-08-21 11:10:29,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:29,207 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:29,208 INFO L82 PathProgramCache]: Analyzing trace with hash 428168706, now seen corresponding path program 75 times [2021-08-21 11:10:29,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:29,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208974631] [2021-08-21 11:10:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:29,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:29,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208974631] [2021-08-21 11:10:29,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208974631] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296481847] [2021-08-21 11:10:29,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:10:29,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:29,357 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:29,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-08-21 11:10:33,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:10:33,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:33,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:10:33,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:34,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296481847] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:34,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:34,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:10:34,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960520924] [2021-08-21 11:10:34,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:10:34,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:10:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:10:34,506 INFO L87 Difference]: Start difference. First operand 5984 states and 16629 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:34,935 INFO L93 Difference]: Finished difference Result 8247 states and 21561 transitions. [2021-08-21 11:10:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:10:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:10:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:34,947 INFO L225 Difference]: With dead ends: 8247 [2021-08-21 11:10:34,947 INFO L226 Difference]: Without dead ends: 8095 [2021-08-21 11:10:34,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 473.9ms TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:10:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2021-08-21 11:10:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6009. [2021-08-21 11:10:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.7769640479360853) internal successors, (16684), 6008 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16684 transitions. [2021-08-21 11:10:35,029 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16684 transitions. Word has length 67 [2021-08-21 11:10:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:35,030 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16684 transitions. [2021-08-21 11:10:35,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16684 transitions. [2021-08-21 11:10:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:35,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:35,036 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:35,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-08-21 11:10:35,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:35,244 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:35,244 INFO L82 PathProgramCache]: Analyzing trace with hash 52468212, now seen corresponding path program 76 times [2021-08-21 11:10:35,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:35,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382103639] [2021-08-21 11:10:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:35,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:35,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:35,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382103639] [2021-08-21 11:10:35,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382103639] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:35,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189126460] [2021-08-21 11:10:35,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:10:35,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:35,437 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:35,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-08-21 11:10:39,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:10:39,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:39,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:10:39,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:40,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189126460] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:40,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:40,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:10:40,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495554388] [2021-08-21 11:10:40,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:10:40,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:10:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:10:40,572 INFO L87 Difference]: Start difference. First operand 6009 states and 16684 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:41,050 INFO L93 Difference]: Finished difference Result 8346 states and 21766 transitions. [2021-08-21 11:10:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:10:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:10:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:41,062 INFO L225 Difference]: With dead ends: 8346 [2021-08-21 11:10:41,062 INFO L226 Difference]: Without dead ends: 8194 [2021-08-21 11:10:41,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 533.9ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:10:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2021-08-21 11:10:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 6009. [2021-08-21 11:10:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.7769640479360853) internal successors, (16684), 6008 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16684 transitions. [2021-08-21 11:10:41,149 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16684 transitions. Word has length 67 [2021-08-21 11:10:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:41,149 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16684 transitions. [2021-08-21 11:10:41,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16684 transitions. [2021-08-21 11:10:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:41,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:41,155 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:41,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-08-21 11:10:41,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-08-21 11:10:41,356 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1437248536, now seen corresponding path program 77 times [2021-08-21 11:10:41,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:41,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737889549] [2021-08-21 11:10:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:41,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:41,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737889549] [2021-08-21 11:10:41,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737889549] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:41,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270869337] [2021-08-21 11:10:41,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:10:41,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:41,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:41,520 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:41,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-08-21 11:10:46,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:10:46,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:46,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:10:46,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:46,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270869337] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:46,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:46,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:10:46,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006002053] [2021-08-21 11:10:46,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:10:46,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:46,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:10:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:10:46,816 INFO L87 Difference]: Start difference. First operand 6009 states and 16684 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:47,329 INFO L93 Difference]: Finished difference Result 8291 states and 21661 transitions. [2021-08-21 11:10:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:10:47,329 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:10:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:47,340 INFO L225 Difference]: With dead ends: 8291 [2021-08-21 11:10:47,340 INFO L226 Difference]: Without dead ends: 8139 [2021-08-21 11:10:47,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 539.4ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:10:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8139 states. [2021-08-21 11:10:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8139 to 6009. [2021-08-21 11:10:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 2.7769640479360853) internal successors, (16684), 6008 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 16684 transitions. [2021-08-21 11:10:47,423 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 16684 transitions. Word has length 67 [2021-08-21 11:10:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:47,423 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 16684 transitions. [2021-08-21 11:10:47,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 16684 transitions. [2021-08-21 11:10:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:47,428 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:47,428 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:47,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-08-21 11:10:47,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-08-21 11:10:47,630 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:47,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:47,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2128302326, now seen corresponding path program 78 times [2021-08-21 11:10:47,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:47,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396232139] [2021-08-21 11:10:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:47,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:47,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:47,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396232139] [2021-08-21 11:10:47,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396232139] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:47,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592522381] [2021-08-21 11:10:47,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:10:47,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:47,820 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:47,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-08-21 11:10:52,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:10:52,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:10:52,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:10:52,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:53,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592522381] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:53,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:53,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:10:53,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268701847] [2021-08-21 11:10:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:10:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:10:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:10:53,042 INFO L87 Difference]: Start difference. First operand 6009 states and 16684 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:53,507 INFO L93 Difference]: Finished difference Result 8341 states and 21739 transitions. [2021-08-21 11:10:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:10:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:10:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:53,520 INFO L225 Difference]: With dead ends: 8341 [2021-08-21 11:10:53,520 INFO L226 Difference]: Without dead ends: 8189 [2021-08-21 11:10:53,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 559.9ms TimeCoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 11:10:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8189 states. [2021-08-21 11:10:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8189 to 6159. [2021-08-21 11:10:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6159 states, 6158 states have (on average 2.762910035725885) internal successors, (17014), 6158 states have internal predecessors, (17014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 17014 transitions. [2021-08-21 11:10:53,608 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 17014 transitions. Word has length 67 [2021-08-21 11:10:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:53,608 INFO L470 AbstractCegarLoop]: Abstraction has 6159 states and 17014 transitions. [2021-08-21 11:10:53,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 17014 transitions. [2021-08-21 11:10:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:53,614 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:53,614 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:53,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2021-08-21 11:10:53,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-08-21 11:10:53,815 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:53,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1752601832, now seen corresponding path program 79 times [2021-08-21 11:10:53,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:53,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688386536] [2021-08-21 11:10:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:53,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:54,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:10:54,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688386536] [2021-08-21 11:10:54,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688386536] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:54,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368206158] [2021-08-21 11:10:54,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:10:54,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:54,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:10:54,024 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:10:54,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-08-21 11:10:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:10:58,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:10:58,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:10:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:10:59,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368206158] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:10:59,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:10:59,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:10:59,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247733933] [2021-08-21 11:10:59,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:10:59,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:10:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:10:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:10:59,134 INFO L87 Difference]: Start difference. First operand 6159 states and 17014 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:10:59,602 INFO L93 Difference]: Finished difference Result 8606 states and 22274 transitions. [2021-08-21 11:10:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 11:10:59,602 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:10:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:10:59,614 INFO L225 Difference]: With dead ends: 8606 [2021-08-21 11:10:59,614 INFO L226 Difference]: Without dead ends: 8454 [2021-08-21 11:10:59,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 549.6ms TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 11:10:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2021-08-21 11:10:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 6209. [2021-08-21 11:10:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6209 states, 6208 states have (on average 2.758376288659794) internal successors, (17124), 6208 states have internal predecessors, (17124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 17124 transitions. [2021-08-21 11:10:59,697 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 17124 transitions. Word has length 67 [2021-08-21 11:10:59,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:10:59,697 INFO L470 AbstractCegarLoop]: Abstraction has 6209 states and 17124 transitions. [2021-08-21 11:10:59,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:10:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 17124 transitions. [2021-08-21 11:10:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:10:59,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:10:59,703 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:10:59,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-08-21 11:10:59,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:10:59,903 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:10:59,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:10:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2131533842, now seen corresponding path program 27 times [2021-08-21 11:10:59,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:10:59,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260725891] [2021-08-21 11:10:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:10:59,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:10:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:00,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:00,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260725891] [2021-08-21 11:11:00,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260725891] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:00,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945207181] [2021-08-21 11:11:00,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:11:00,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:00,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:00,008 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:00,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-08-21 11:11:04,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-21 11:11:04,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:04,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 11:11:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:04,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945207181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:11:04,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-21 11:11:04,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-08-21 11:11:04,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481723283] [2021-08-21 11:11:04,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 11:11:04,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 11:11:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:11:04,853 INFO L87 Difference]: Start difference. First operand 6209 states and 17124 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:05,019 INFO L93 Difference]: Finished difference Result 9656 states and 27046 transitions. [2021-08-21 11:11:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 11:11:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:05,032 INFO L225 Difference]: With dead ends: 9656 [2021-08-21 11:11:05,032 INFO L226 Difference]: Without dead ends: 8370 [2021-08-21 11:11:05,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:11:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-08-21 11:11:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 8150. [2021-08-21 11:11:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8150 states, 8149 states have (on average 2.812369615903792) internal successors, (22918), 8149 states have internal predecessors, (22918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8150 states to 8150 states and 22918 transitions. [2021-08-21 11:11:05,139 INFO L78 Accepts]: Start accepts. Automaton has 8150 states and 22918 transitions. Word has length 67 [2021-08-21 11:11:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:05,140 INFO L470 AbstractCegarLoop]: Abstraction has 8150 states and 22918 transitions. [2021-08-21 11:11:05,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8150 states and 22918 transitions. [2021-08-21 11:11:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:05,149 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:05,149 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:05,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-08-21 11:11:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-08-21 11:11:05,349 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1509692112, now seen corresponding path program 80 times [2021-08-21 11:11:05,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:05,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672232952] [2021-08-21 11:11:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:05,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:05,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:05,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672232952] [2021-08-21 11:11:05,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672232952] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:05,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608753241] [2021-08-21 11:11:05,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:11:05,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:05,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:05,485 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:05,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-08-21 11:11:10,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:11:10,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:10,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:10,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:10,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608753241] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:10,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:10,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:10,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777553163] [2021-08-21 11:11:10,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:10,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:10,802 INFO L87 Difference]: Start difference. First operand 8150 states and 22918 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:11,190 INFO L93 Difference]: Finished difference Result 9941 states and 26556 transitions. [2021-08-21 11:11:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:11:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:11,203 INFO L225 Difference]: With dead ends: 9941 [2021-08-21 11:11:11,204 INFO L226 Difference]: Without dead ends: 9757 [2021-08-21 11:11:11,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 432.2ms TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:11:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9757 states. [2021-08-21 11:11:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9757 to 8175. [2021-08-21 11:11:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8175 states, 8174 states have (on average 2.8104966968436504) internal successors, (22973), 8174 states have internal predecessors, (22973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8175 states to 8175 states and 22973 transitions. [2021-08-21 11:11:11,338 INFO L78 Accepts]: Start accepts. Automaton has 8175 states and 22973 transitions. Word has length 67 [2021-08-21 11:11:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:11,338 INFO L470 AbstractCegarLoop]: Abstraction has 8175 states and 22973 transitions. [2021-08-21 11:11:11,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8175 states and 22973 transitions. [2021-08-21 11:11:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:11,348 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:11,348 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:11,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-08-21 11:11:11,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-08-21 11:11:11,548 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1133991618, now seen corresponding path program 81 times [2021-08-21 11:11:11,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:11,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307218202] [2021-08-21 11:11:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:11,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307218202] [2021-08-21 11:11:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307218202] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044230144] [2021-08-21 11:11:11,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:11:11,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:11,681 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:11,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-08-21 11:11:16,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:11:16,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:16,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:16,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:17,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044230144] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:17,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:17,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:17,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142128872] [2021-08-21 11:11:17,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:17,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:17,088 INFO L87 Difference]: Start difference. First operand 8175 states and 22973 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:17,499 INFO L93 Difference]: Finished difference Result 10055 states and 26803 transitions. [2021-08-21 11:11:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 11:11:17,500 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:17,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:17,514 INFO L225 Difference]: With dead ends: 10055 [2021-08-21 11:11:17,514 INFO L226 Difference]: Without dead ends: 9787 [2021-08-21 11:11:17,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 474.9ms TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:11:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9787 states. [2021-08-21 11:11:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9787 to 8150. [2021-08-21 11:11:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8150 states, 8149 states have (on average 2.811756043686342) internal successors, (22913), 8149 states have internal predecessors, (22913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8150 states to 8150 states and 22913 transitions. [2021-08-21 11:11:17,629 INFO L78 Accepts]: Start accepts. Automaton has 8150 states and 22913 transitions. Word has length 67 [2021-08-21 11:11:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:17,629 INFO L470 AbstractCegarLoop]: Abstraction has 8150 states and 22913 transitions. [2021-08-21 11:11:17,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8150 states and 22913 transitions. [2021-08-21 11:11:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:17,637 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:17,637 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:17,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-08-21 11:11:17,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-08-21 11:11:17,837 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1893907118, now seen corresponding path program 82 times [2021-08-21 11:11:17,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:17,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978637371] [2021-08-21 11:11:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:17,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:18,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:18,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978637371] [2021-08-21 11:11:18,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978637371] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:18,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15909565] [2021-08-21 11:11:18,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:11:18,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:18,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:18,040 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:18,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-08-21 11:11:23,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:11:23,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:23,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15909565] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:23,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:23,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:23,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151787647] [2021-08-21 11:11:23,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:23,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:23,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:23,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:23,571 INFO L87 Difference]: Start difference. First operand 8150 states and 22913 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:23,954 INFO L93 Difference]: Finished difference Result 9871 states and 26472 transitions. [2021-08-21 11:11:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:11:23,954 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:23,968 INFO L225 Difference]: With dead ends: 9871 [2021-08-21 11:11:23,968 INFO L226 Difference]: Without dead ends: 9647 [2021-08-21 11:11:23,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 410.0ms TimeCoverageRelationStatistics Valid=354, Invalid=978, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 11:11:23,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2021-08-21 11:11:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 8100. [2021-08-21 11:11:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 8099 states have (on average 2.8155327818249165) internal successors, (22803), 8099 states have internal predecessors, (22803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 22803 transitions. [2021-08-21 11:11:24,072 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 22803 transitions. Word has length 67 [2021-08-21 11:11:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:24,072 INFO L470 AbstractCegarLoop]: Abstraction has 8100 states and 22803 transitions. [2021-08-21 11:11:24,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 22803 transitions. [2021-08-21 11:11:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:24,080 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:24,080 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:24,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-08-21 11:11:24,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-08-21 11:11:24,281 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1653608066, now seen corresponding path program 83 times [2021-08-21 11:11:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:24,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394625570] [2021-08-21 11:11:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:24,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:24,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:24,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394625570] [2021-08-21 11:11:24,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394625570] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:24,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358378050] [2021-08-21 11:11:24,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:11:24,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:24,469 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:24,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-08-21 11:11:29,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-21 11:11:29,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:29,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:29,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:29,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358378050] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:29,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:29,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:29,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396287193] [2021-08-21 11:11:29,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:29,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:29,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:29,806 INFO L87 Difference]: Start difference. First operand 8100 states and 22803 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:30,240 INFO L93 Difference]: Finished difference Result 9906 states and 26553 transitions. [2021-08-21 11:11:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:11:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:30,256 INFO L225 Difference]: With dead ends: 9906 [2021-08-21 11:11:30,257 INFO L226 Difference]: Without dead ends: 9602 [2021-08-21 11:11:30,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 471.9ms TimeCoverageRelationStatistics Valid=436, Invalid=1124, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:11:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2021-08-21 11:11:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 8300. [2021-08-21 11:11:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8300 states, 8299 states have (on average 2.798891432702735) internal successors, (23228), 8299 states have internal predecessors, (23228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8300 states to 8300 states and 23228 transitions. [2021-08-21 11:11:30,376 INFO L78 Accepts]: Start accepts. Automaton has 8300 states and 23228 transitions. Word has length 67 [2021-08-21 11:11:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:30,376 INFO L470 AbstractCegarLoop]: Abstraction has 8300 states and 23228 transitions. [2021-08-21 11:11:30,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 8300 states and 23228 transitions. [2021-08-21 11:11:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:30,385 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:30,385 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:30,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-08-21 11:11:30,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:30,586 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1277907572, now seen corresponding path program 84 times [2021-08-21 11:11:30,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:30,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552044716] [2021-08-21 11:11:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:30,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:30,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:30,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552044716] [2021-08-21 11:11:30,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552044716] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:30,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512569611] [2021-08-21 11:11:30,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:11:30,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:30,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:30,725 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:30,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-08-21 11:11:35,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-21 11:11:35,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:35,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:35,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:36,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512569611] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:36,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:36,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:36,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475705169] [2021-08-21 11:11:36,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:36,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:36,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:36,229 INFO L87 Difference]: Start difference. First operand 8300 states and 23228 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:36,693 INFO L93 Difference]: Finished difference Result 10501 states and 27786 transitions. [2021-08-21 11:11:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:11:36,693 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:36,708 INFO L225 Difference]: With dead ends: 10501 [2021-08-21 11:11:36,709 INFO L226 Difference]: Without dead ends: 10197 [2021-08-21 11:11:36,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 496.7ms TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:11:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2021-08-21 11:11:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 8300. [2021-08-21 11:11:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8300 states, 8299 states have (on average 2.798891432702735) internal successors, (23228), 8299 states have internal predecessors, (23228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8300 states to 8300 states and 23228 transitions. [2021-08-21 11:11:36,826 INFO L78 Accepts]: Start accepts. Automaton has 8300 states and 23228 transitions. Word has length 67 [2021-08-21 11:11:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:36,826 INFO L470 AbstractCegarLoop]: Abstraction has 8300 states and 23228 transitions. [2021-08-21 11:11:36,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8300 states and 23228 transitions. [2021-08-21 11:11:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:36,836 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:36,836 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:36,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-08-21 11:11:37,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:37,053 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash 863728080, now seen corresponding path program 85 times [2021-08-21 11:11:37,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:37,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823724942] [2021-08-21 11:11:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:37,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:37,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:37,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823724942] [2021-08-21 11:11:37,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823724942] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:37,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426706668] [2021-08-21 11:11:37,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:11:37,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:37,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:37,223 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:37,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-08-21 11:11:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:42,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:42,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:42,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426706668] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:42,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:42,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:42,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48119776] [2021-08-21 11:11:42,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:42,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:42,706 INFO L87 Difference]: Start difference. First operand 8300 states and 23228 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:43,181 INFO L93 Difference]: Finished difference Result 10626 states and 28041 transitions. [2021-08-21 11:11:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:11:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:43,196 INFO L225 Difference]: With dead ends: 10626 [2021-08-21 11:11:43,196 INFO L226 Difference]: Without dead ends: 10322 [2021-08-21 11:11:43,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 536.1ms TimeCoverageRelationStatistics Valid=522, Invalid=1284, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 11:11:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-08-21 11:11:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 8450. [2021-08-21 11:11:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8450 states, 8449 states have (on average 2.786483607527518) internal successors, (23543), 8449 states have internal predecessors, (23543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8450 states to 8450 states and 23543 transitions. [2021-08-21 11:11:43,381 INFO L78 Accepts]: Start accepts. Automaton has 8450 states and 23543 transitions. Word has length 67 [2021-08-21 11:11:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:43,381 INFO L470 AbstractCegarLoop]: Abstraction has 8450 states and 23543 transitions. [2021-08-21 11:11:43,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8450 states and 23543 transitions. [2021-08-21 11:11:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:43,390 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:43,390 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:43,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-08-21 11:11:43,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:43,590 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:43,591 INFO L82 PathProgramCache]: Analyzing trace with hash 488027586, now seen corresponding path program 86 times [2021-08-21 11:11:43,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:43,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713036205] [2021-08-21 11:11:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:43,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:43,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:43,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713036205] [2021-08-21 11:11:43,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713036205] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:43,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808121654] [2021-08-21 11:11:43,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:11:43,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:43,824 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:43,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-08-21 11:11:48,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:11:48,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:48,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:48,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:49,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808121654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:49,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:49,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:49,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158862397] [2021-08-21 11:11:49,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:49,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:49,359 INFO L87 Difference]: Start difference. First operand 8450 states and 23543 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:49,863 INFO L93 Difference]: Finished difference Result 10510 states and 27767 transitions. [2021-08-21 11:11:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 11:11:49,864 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:49,878 INFO L225 Difference]: With dead ends: 10510 [2021-08-21 11:11:49,878 INFO L226 Difference]: Without dead ends: 10162 [2021-08-21 11:11:49,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 539.7ms TimeCoverageRelationStatistics Valid=523, Invalid=1283, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 11:11:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10162 states. [2021-08-21 11:11:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10162 to 8475. [2021-08-21 11:11:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8475 states, 8474 states have (on average 2.7841633231059713) internal successors, (23593), 8474 states have internal predecessors, (23593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8475 states to 8475 states and 23593 transitions. [2021-08-21 11:11:49,985 INFO L78 Accepts]: Start accepts. Automaton has 8475 states and 23593 transitions. Word has length 67 [2021-08-21 11:11:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:49,985 INFO L470 AbstractCegarLoop]: Abstraction has 8475 states and 23593 transitions. [2021-08-21 11:11:49,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8475 states and 23593 transitions. [2021-08-21 11:11:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:49,994 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:49,994 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:50,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2021-08-21 11:11:50,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-08-21 11:11:50,205 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:50,205 INFO L82 PathProgramCache]: Analyzing trace with hash -889204762, now seen corresponding path program 87 times [2021-08-21 11:11:50,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:50,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443521504] [2021-08-21 11:11:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:50,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:50,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:50,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443521504] [2021-08-21 11:11:50,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443521504] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:50,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078982224] [2021-08-21 11:11:50,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:11:50,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:50,353 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:50,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-08-21 11:11:55,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:11:55,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:11:55,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:11:55,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:11:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:56,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078982224] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:56,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:11:56,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:11:56,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042452417] [2021-08-21 11:11:56,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:11:56,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:11:56,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:11:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:11:56,189 INFO L87 Difference]: Start difference. First operand 8475 states and 23593 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:11:56,663 INFO L93 Difference]: Finished difference Result 10455 states and 27657 transitions. [2021-08-21 11:11:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:11:56,663 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:11:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:11:56,679 INFO L225 Difference]: With dead ends: 10455 [2021-08-21 11:11:56,679 INFO L226 Difference]: Without dead ends: 10122 [2021-08-21 11:11:56,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 509.9ms TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:11:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2021-08-21 11:11:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 8425. [2021-08-21 11:11:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8425 states, 8424 states have (on average 2.787630579297246) internal successors, (23483), 8424 states have internal predecessors, (23483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 23483 transitions. [2021-08-21 11:11:56,795 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 23483 transitions. Word has length 67 [2021-08-21 11:11:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:11:56,795 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 23483 transitions. [2021-08-21 11:11:56,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:11:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 23483 transitions. [2021-08-21 11:11:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:11:56,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:11:56,804 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:11:56,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-08-21 11:11:57,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-08-21 11:11:57,007 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:11:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:11:57,007 INFO L82 PathProgramCache]: Analyzing trace with hash 946247994, now seen corresponding path program 88 times [2021-08-21 11:11:57,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:11:57,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538985248] [2021-08-21 11:11:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:11:57,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:11:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:11:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:11:57,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:11:57,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538985248] [2021-08-21 11:11:57,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538985248] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:11:57,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686731615] [2021-08-21 11:11:57,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:11:57,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:11:57,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:11:57,147 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:11:57,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-08-21 11:12:02,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:12:02,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:02,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:02,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:02,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686731615] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:02,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:02,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:02,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428960444] [2021-08-21 11:12:02,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:02,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:02,987 INFO L87 Difference]: Start difference. First operand 8425 states and 23483 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:03,437 INFO L93 Difference]: Finished difference Result 9774 states and 26203 transitions. [2021-08-21 11:12:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 11:12:03,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:03,452 INFO L225 Difference]: With dead ends: 9774 [2021-08-21 11:12:03,452 INFO L226 Difference]: Without dead ends: 9632 [2021-08-21 11:12:03,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 504.5ms TimeCoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:12:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2021-08-21 11:12:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 8350. [2021-08-21 11:12:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 8349 states have (on average 2.7947059528087195) internal successors, (23333), 8349 states have internal predecessors, (23333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 23333 transitions. [2021-08-21 11:12:03,564 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 23333 transitions. Word has length 67 [2021-08-21 11:12:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:03,565 INFO L470 AbstractCegarLoop]: Abstraction has 8350 states and 23333 transitions. [2021-08-21 11:12:03,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 23333 transitions. [2021-08-21 11:12:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:03,574 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:03,574 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:03,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-08-21 11:12:03,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-08-21 11:12:03,775 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash -858321184, now seen corresponding path program 89 times [2021-08-21 11:12:03,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:03,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723955197] [2021-08-21 11:12:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:03,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:03,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:03,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723955197] [2021-08-21 11:12:03,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723955197] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:03,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317921117] [2021-08-21 11:12:03,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:12:03,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:03,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:03,926 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:03,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-08-21 11:12:09,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:12:09,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:09,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:09,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:09,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317921117] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:09,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:09,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:09,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882932082] [2021-08-21 11:12:09,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:09,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:09,787 INFO L87 Difference]: Start difference. First operand 8350 states and 23333 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:10,246 INFO L93 Difference]: Finished difference Result 10036 states and 26866 transitions. [2021-08-21 11:12:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 11:12:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:10,262 INFO L225 Difference]: With dead ends: 10036 [2021-08-21 11:12:10,262 INFO L226 Difference]: Without dead ends: 9732 [2021-08-21 11:12:10,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 507.1ms TimeCoverageRelationStatistics Valid=386, Invalid=1020, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:12:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2021-08-21 11:12:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 8325. [2021-08-21 11:12:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8325 states, 8324 states have (on average 2.796492071119654) internal successors, (23278), 8324 states have internal predecessors, (23278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8325 states to 8325 states and 23278 transitions. [2021-08-21 11:12:10,374 INFO L78 Accepts]: Start accepts. Automaton has 8325 states and 23278 transitions. Word has length 67 [2021-08-21 11:12:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:10,374 INFO L470 AbstractCegarLoop]: Abstraction has 8325 states and 23278 transitions. [2021-08-21 11:12:10,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8325 states and 23278 transitions. [2021-08-21 11:12:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:10,382 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:10,382 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:10,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2021-08-21 11:12:10,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-08-21 11:12:10,583 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:10,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1648201170, now seen corresponding path program 90 times [2021-08-21 11:12:10,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:10,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627634332] [2021-08-21 11:12:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:10,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:10,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:10,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627634332] [2021-08-21 11:12:10,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627634332] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:10,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191811989] [2021-08-21 11:12:10,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:12:10,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:10,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:10,725 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:10,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-08-21 11:12:16,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:12:16,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:16,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191811989] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:16,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:16,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:16,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738142791] [2021-08-21 11:12:16,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:16,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:16,627 INFO L87 Difference]: Start difference. First operand 8325 states and 23278 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:17,109 INFO L93 Difference]: Finished difference Result 9941 states and 26597 transitions. [2021-08-21 11:12:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:12:17,109 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:17,122 INFO L225 Difference]: With dead ends: 9941 [2021-08-21 11:12:17,122 INFO L226 Difference]: Without dead ends: 9717 [2021-08-21 11:12:17,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 543.3ms TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:12:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9717 states. [2021-08-21 11:12:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9717 to 8275. [2021-08-21 11:12:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8274 states have (on average 2.8013052936910805) internal successors, (23178), 8274 states have internal predecessors, (23178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 23178 transitions. [2021-08-21 11:12:17,223 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 23178 transitions. Word has length 67 [2021-08-21 11:12:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:17,223 INFO L470 AbstractCegarLoop]: Abstraction has 8275 states and 23178 transitions. [2021-08-21 11:12:17,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 23178 transitions. [2021-08-21 11:12:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:17,231 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:17,231 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:17,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-08-21 11:12:17,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-08-21 11:12:17,433 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1982553662, now seen corresponding path program 91 times [2021-08-21 11:12:17,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:17,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869583710] [2021-08-21 11:12:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:17,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:17,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:17,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869583710] [2021-08-21 11:12:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869583710] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:17,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333204348] [2021-08-21 11:12:17,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:12:17,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:17,576 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:17,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-08-21 11:12:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:22,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:22,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:23,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333204348] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:23,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:23,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:23,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844220536] [2021-08-21 11:12:23,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:23,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:23,502 INFO L87 Difference]: Start difference. First operand 8275 states and 23178 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:23,883 INFO L93 Difference]: Finished difference Result 9716 states and 26152 transitions. [2021-08-21 11:12:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 11:12:23,883 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:23,897 INFO L225 Difference]: With dead ends: 9716 [2021-08-21 11:12:23,897 INFO L226 Difference]: Without dead ends: 9492 [2021-08-21 11:12:23,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 437.7ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:12:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2021-08-21 11:12:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 8190. [2021-08-21 11:12:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 8189 states have (on average 2.806569788740994) internal successors, (22983), 8189 states have internal predecessors, (22983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 22983 transitions. [2021-08-21 11:12:24,008 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 22983 transitions. Word has length 67 [2021-08-21 11:12:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:24,008 INFO L470 AbstractCegarLoop]: Abstraction has 8190 states and 22983 transitions. [2021-08-21 11:12:24,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 22983 transitions. [2021-08-21 11:12:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:24,017 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:24,017 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:24,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-08-21 11:12:24,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:24,219 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:24,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1733536500, now seen corresponding path program 92 times [2021-08-21 11:12:24,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:24,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518355697] [2021-08-21 11:12:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:24,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:24,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518355697] [2021-08-21 11:12:24,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518355697] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347032282] [2021-08-21 11:12:24,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:12:24,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:24,424 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:24,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-08-21 11:12:29,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:12:29,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:29,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:29,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:30,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347032282] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:30,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:30,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:30,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546410506] [2021-08-21 11:12:30,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:30,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:30,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:30,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:30,374 INFO L87 Difference]: Start difference. First operand 8190 states and 22983 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:30,674 INFO L93 Difference]: Finished difference Result 10114 states and 26858 transitions. [2021-08-21 11:12:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:12:30,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:30,688 INFO L225 Difference]: With dead ends: 10114 [2021-08-21 11:12:30,689 INFO L226 Difference]: Without dead ends: 9987 [2021-08-21 11:12:30,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 353.8ms TimeCoverageRelationStatistics Valid=291, Invalid=765, Unknown=0, NotChecked=0, Total=1056 [2021-08-21 11:12:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-08-21 11:12:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 8240. [2021-08-21 11:12:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8239 states have (on average 2.8016749605534654) internal successors, (23083), 8239 states have internal predecessors, (23083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 23083 transitions. [2021-08-21 11:12:30,795 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 23083 transitions. Word has length 67 [2021-08-21 11:12:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:30,795 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 23083 transitions. [2021-08-21 11:12:30,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 23083 transitions. [2021-08-21 11:12:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:30,803 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:30,803 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:30,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-08-21 11:12:31,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:31,004 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -207990376, now seen corresponding path program 93 times [2021-08-21 11:12:31,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:31,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438586326] [2021-08-21 11:12:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:31,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:31,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:31,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438586326] [2021-08-21 11:12:31,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438586326] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:31,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554642569] [2021-08-21 11:12:31,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:12:31,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:31,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:31,134 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:31,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-08-21 11:12:36,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:12:36,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:36,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:36,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:37,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554642569] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:37,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:37,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:37,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439911365] [2021-08-21 11:12:37,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:37,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:37,118 INFO L87 Difference]: Start difference. First operand 8240 states and 23083 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:37,530 INFO L93 Difference]: Finished difference Result 10626 states and 27967 transitions. [2021-08-21 11:12:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:12:37,531 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:37,545 INFO L225 Difference]: With dead ends: 10626 [2021-08-21 11:12:37,545 INFO L226 Difference]: Without dead ends: 10402 [2021-08-21 11:12:37,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 434.2ms TimeCoverageRelationStatistics Valid=366, Invalid=1040, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:12:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10402 states. [2021-08-21 11:12:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10402 to 8290. [2021-08-21 11:12:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8290 states, 8289 states have (on average 2.797442393533599) internal successors, (23188), 8289 states have internal predecessors, (23188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8290 states to 8290 states and 23188 transitions. [2021-08-21 11:12:37,658 INFO L78 Accepts]: Start accepts. Automaton has 8290 states and 23188 transitions. Word has length 67 [2021-08-21 11:12:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:37,658 INFO L470 AbstractCegarLoop]: Abstraction has 8290 states and 23188 transitions. [2021-08-21 11:12:37,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8290 states and 23188 transitions. [2021-08-21 11:12:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:37,667 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:37,667 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:37,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2021-08-21 11:12:37,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-08-21 11:12:37,868 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash -583690870, now seen corresponding path program 94 times [2021-08-21 11:12:37,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:37,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353530586] [2021-08-21 11:12:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:37,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:38,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:38,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353530586] [2021-08-21 11:12:38,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353530586] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:38,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600291535] [2021-08-21 11:12:38,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:12:38,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:38,153 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:38,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-08-21 11:12:43,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:12:43,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:43,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:43,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:44,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600291535] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:44,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:44,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:44,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684661677] [2021-08-21 11:12:44,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:44,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:44,123 INFO L87 Difference]: Start difference. First operand 8290 states and 23188 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:44,536 INFO L93 Difference]: Finished difference Result 10099 states and 26828 transitions. [2021-08-21 11:12:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:12:44,537 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:44,551 INFO L225 Difference]: With dead ends: 10099 [2021-08-21 11:12:44,551 INFO L226 Difference]: Without dead ends: 9972 [2021-08-21 11:12:44,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 452.4ms TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:12:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2021-08-21 11:12:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 8290. [2021-08-21 11:12:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8290 states, 8289 states have (on average 2.797442393533599) internal successors, (23188), 8289 states have internal predecessors, (23188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8290 states to 8290 states and 23188 transitions. [2021-08-21 11:12:44,665 INFO L78 Accepts]: Start accepts. Automaton has 8290 states and 23188 transitions. Word has length 67 [2021-08-21 11:12:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:44,665 INFO L470 AbstractCegarLoop]: Abstraction has 8290 states and 23188 transitions. [2021-08-21 11:12:44,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8290 states and 23188 transitions. [2021-08-21 11:12:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:44,674 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:44,674 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:44,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-08-21 11:12:44,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:44,875 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:44,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2073407618, now seen corresponding path program 95 times [2021-08-21 11:12:44,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:44,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660496287] [2021-08-21 11:12:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:44,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:45,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:45,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660496287] [2021-08-21 11:12:45,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660496287] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:45,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425024199] [2021-08-21 11:12:45,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:12:45,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:45,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:45,083 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:45,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-08-21 11:12:50,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:12:50,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:50,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:51,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425024199] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:51,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:51,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:51,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689805530] [2021-08-21 11:12:51,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:51,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:51,210 INFO L87 Difference]: Start difference. First operand 8290 states and 23188 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:51,777 INFO L93 Difference]: Finished difference Result 10575 states and 27843 transitions. [2021-08-21 11:12:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:12:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:51,795 INFO L225 Difference]: With dead ends: 10575 [2021-08-21 11:12:51,795 INFO L226 Difference]: Without dead ends: 10322 [2021-08-21 11:12:51,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 582.4ms TimeCoverageRelationStatistics Valid=378, Invalid=1028, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 11:12:51,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-08-21 11:12:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 8240. [2021-08-21 11:12:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8239 states have (on average 2.8016749605534654) internal successors, (23083), 8239 states have internal predecessors, (23083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 23083 transitions. [2021-08-21 11:12:51,958 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 23083 transitions. Word has length 67 [2021-08-21 11:12:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:51,958 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 23083 transitions. [2021-08-21 11:12:51,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 23083 transitions. [2021-08-21 11:12:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:51,968 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:51,968 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:52,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-08-21 11:12:52,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:52,169 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1492143244, now seen corresponding path program 96 times [2021-08-21 11:12:52,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:52,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619680771] [2021-08-21 11:12:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:52,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:52,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:52,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619680771] [2021-08-21 11:12:52,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619680771] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:52,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689706120] [2021-08-21 11:12:52,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:12:52,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:52,302 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:52,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-08-21 11:12:57,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:12:57,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:12:57,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:12:57,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:12:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:58,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689706120] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:58,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:12:58,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:12:58,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875732715] [2021-08-21 11:12:58,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:12:58,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:12:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:12:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:12:58,456 INFO L87 Difference]: Start difference. First operand 8240 states and 23083 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:12:58,981 INFO L93 Difference]: Finished difference Result 10910 states and 28621 transitions. [2021-08-21 11:12:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:12:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:12:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:12:58,998 INFO L225 Difference]: With dead ends: 10910 [2021-08-21 11:12:58,998 INFO L226 Difference]: Without dead ends: 10527 [2021-08-21 11:12:58,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 530.2ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:12:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10527 states. [2021-08-21 11:12:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10527 to 8340. [2021-08-21 11:12:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8340 states, 8339 states have (on average 2.7944597673581963) internal successors, (23303), 8339 states have internal predecessors, (23303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8340 states to 8340 states and 23303 transitions. [2021-08-21 11:12:59,122 INFO L78 Accepts]: Start accepts. Automaton has 8340 states and 23303 transitions. Word has length 67 [2021-08-21 11:12:59,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:12:59,122 INFO L470 AbstractCegarLoop]: Abstraction has 8340 states and 23303 transitions. [2021-08-21 11:12:59,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:12:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8340 states and 23303 transitions. [2021-08-21 11:12:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:12:59,132 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:12:59,132 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:12:59,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2021-08-21 11:12:59,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:59,332 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:12:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:12:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1116442750, now seen corresponding path program 97 times [2021-08-21 11:12:59,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:12:59,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338641669] [2021-08-21 11:12:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:12:59,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:12:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:12:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:12:59,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:12:59,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338641669] [2021-08-21 11:12:59,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338641669] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:12:59,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183668871] [2021-08-21 11:12:59,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:12:59,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:12:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:12:59,466 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:12:59,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-08-21 11:13:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:05,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:05,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:05,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183668871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:05,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:05,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:05,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705764805] [2021-08-21 11:13:05,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:05,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:05,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:05,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:05,701 INFO L87 Difference]: Start difference. First operand 8340 states and 23303 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:06,149 INFO L93 Difference]: Finished difference Result 10880 states and 28482 transitions. [2021-08-21 11:13:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 11:13:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:06,165 INFO L225 Difference]: With dead ends: 10880 [2021-08-21 11:13:06,166 INFO L226 Difference]: Without dead ends: 10547 [2021-08-21 11:13:06,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 480.8ms TimeCoverageRelationStatistics Valid=463, Invalid=1259, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 11:13:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2021-08-21 11:13:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 8315. [2021-08-21 11:13:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8315 states, 8314 states have (on average 2.7968486889583835) internal successors, (23253), 8314 states have internal predecessors, (23253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 23253 transitions. [2021-08-21 11:13:06,291 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 23253 transitions. Word has length 67 [2021-08-21 11:13:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:06,291 INFO L470 AbstractCegarLoop]: Abstraction has 8315 states and 23253 transitions. [2021-08-21 11:13:06,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 23253 transitions. [2021-08-21 11:13:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:06,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:06,300 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:06,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2021-08-21 11:13:06,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:06,501 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash 873533030, now seen corresponding path program 98 times [2021-08-21 11:13:06,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:06,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931610087] [2021-08-21 11:13:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:06,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:06,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:06,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931610087] [2021-08-21 11:13:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931610087] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:06,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814981884] [2021-08-21 11:13:06,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:13:06,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:06,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:06,638 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:06,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-08-21 11:13:12,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:13:12,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:13:12,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:12,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:13,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814981884] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:13,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:13,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:13,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312049461] [2021-08-21 11:13:13,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:13,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:13,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:13,041 INFO L87 Difference]: Start difference. First operand 8315 states and 23253 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:13,583 INFO L93 Difference]: Finished difference Result 10376 states and 27426 transitions. [2021-08-21 11:13:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 11:13:13,583 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:13,598 INFO L225 Difference]: With dead ends: 10376 [2021-08-21 11:13:13,598 INFO L226 Difference]: Without dead ends: 10192 [2021-08-21 11:13:13,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 541.1ms TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 11:13:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10192 states. [2021-08-21 11:13:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10192 to 8340. [2021-08-21 11:13:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8340 states, 8339 states have (on average 2.795059359635448) internal successors, (23308), 8339 states have internal predecessors, (23308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8340 states to 8340 states and 23308 transitions. [2021-08-21 11:13:13,704 INFO L78 Accepts]: Start accepts. Automaton has 8340 states and 23308 transitions. Word has length 67 [2021-08-21 11:13:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:13,704 INFO L470 AbstractCegarLoop]: Abstraction has 8340 states and 23308 transitions. [2021-08-21 11:13:13,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 8340 states and 23308 transitions. [2021-08-21 11:13:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:13,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:13,713 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:13,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-08-21 11:13:13,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-08-21 11:13:13,914 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash 497832536, now seen corresponding path program 99 times [2021-08-21 11:13:13,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:13,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99276221] [2021-08-21 11:13:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:13,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:14,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:14,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99276221] [2021-08-21 11:13:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99276221] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:14,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446388654] [2021-08-21 11:13:14,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:13:14,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:14,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:14,093 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:14,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-08-21 11:13:20,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:13:20,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:13:20,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:20,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:20,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446388654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:20,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:20,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:20,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384902488] [2021-08-21 11:13:20,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:20,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:20,595 INFO L87 Difference]: Start difference. First operand 8340 states and 23308 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:21,204 INFO L93 Difference]: Finished difference Result 10415 states and 27498 transitions. [2021-08-21 11:13:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:13:21,204 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:21,219 INFO L225 Difference]: With dead ends: 10415 [2021-08-21 11:13:21,220 INFO L226 Difference]: Without dead ends: 10147 [2021-08-21 11:13:21,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 610.4ms TimeCoverageRelationStatistics Valid=505, Invalid=1475, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:13:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10147 states. [2021-08-21 11:13:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10147 to 8315. [2021-08-21 11:13:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8315 states, 8314 states have (on average 2.7962472937214335) internal successors, (23248), 8314 states have internal predecessors, (23248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 23248 transitions. [2021-08-21 11:13:21,342 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 23248 transitions. Word has length 67 [2021-08-21 11:13:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:21,342 INFO L470 AbstractCegarLoop]: Abstraction has 8315 states and 23248 transitions. [2021-08-21 11:13:21,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 23248 transitions. [2021-08-21 11:13:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:21,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:21,352 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:21,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2021-08-21 11:13:21,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-08-21 11:13:21,552 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:21,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1257748036, now seen corresponding path program 100 times [2021-08-21 11:13:21,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:21,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686013919] [2021-08-21 11:13:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:21,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:21,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:21,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686013919] [2021-08-21 11:13:21,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686013919] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:21,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729873601] [2021-08-21 11:13:21,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:13:21,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:21,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:21,691 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:21,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-08-21 11:13:27,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:13:27,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:13:27,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:27,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:28,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729873601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:28,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:28,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:28,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295031998] [2021-08-21 11:13:28,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:28,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:28,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:28,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:28,093 INFO L87 Difference]: Start difference. First operand 8315 states and 23248 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:28,505 INFO L93 Difference]: Finished difference Result 10211 states and 27137 transitions. [2021-08-21 11:13:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:13:28,505 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:28,518 INFO L225 Difference]: With dead ends: 10211 [2021-08-21 11:13:28,519 INFO L226 Difference]: Without dead ends: 9987 [2021-08-21 11:13:28,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 433.2ms TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:13:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-08-21 11:13:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 8165. [2021-08-21 11:13:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8165 states, 8164 states have (on average 2.8090396864282217) internal successors, (22933), 8164 states have internal predecessors, (22933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 22933 transitions. [2021-08-21 11:13:28,620 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 22933 transitions. Word has length 67 [2021-08-21 11:13:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:28,620 INFO L470 AbstractCegarLoop]: Abstraction has 8165 states and 22933 transitions. [2021-08-21 11:13:28,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 22933 transitions. [2021-08-21 11:13:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:28,628 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:28,628 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:28,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2021-08-21 11:13:28,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-08-21 11:13:28,828 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:28,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1661305408, now seen corresponding path program 101 times [2021-08-21 11:13:28,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:28,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423521414] [2021-08-21 11:13:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:28,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:29,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:29,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423521414] [2021-08-21 11:13:29,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423521414] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:29,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968256318] [2021-08-21 11:13:29,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:13:29,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:29,023 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:29,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-08-21 11:13:34,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:13:34,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:13:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:34,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:35,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968256318] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:35,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:35,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:35,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614335254] [2021-08-21 11:13:35,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:35,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:35,347 INFO L87 Difference]: Start difference. First operand 8165 states and 22933 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:35,641 INFO L93 Difference]: Finished difference Result 9939 states and 26508 transitions. [2021-08-21 11:13:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:13:35,641 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:35,654 INFO L225 Difference]: With dead ends: 9939 [2021-08-21 11:13:35,655 INFO L226 Difference]: Without dead ends: 9812 [2021-08-21 11:13:35,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 335.6ms TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-08-21 11:13:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9812 states. [2021-08-21 11:13:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9812 to 8190. [2021-08-21 11:13:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 8189 states have (on average 2.806569788740994) internal successors, (22983), 8189 states have internal predecessors, (22983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 22983 transitions. [2021-08-21 11:13:35,765 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 22983 transitions. Word has length 67 [2021-08-21 11:13:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:35,765 INFO L470 AbstractCegarLoop]: Abstraction has 8190 states and 22983 transitions. [2021-08-21 11:13:35,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 22983 transitions. [2021-08-21 11:13:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:35,774 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:35,774 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:35,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2021-08-21 11:13:35,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:35,975 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash -135759284, now seen corresponding path program 102 times [2021-08-21 11:13:35,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:35,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802817073] [2021-08-21 11:13:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:35,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:36,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:36,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802817073] [2021-08-21 11:13:36,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802817073] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:36,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214150559] [2021-08-21 11:13:36,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:13:36,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:36,147 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:36,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-08-21 11:13:41,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 11:13:41,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:13:41,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:41,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:42,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214150559] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:42,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:42,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:42,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594753451] [2021-08-21 11:13:42,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:42,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:42,502 INFO L87 Difference]: Start difference. First operand 8190 states and 22983 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:42,945 INFO L93 Difference]: Finished difference Result 10471 states and 27652 transitions. [2021-08-21 11:13:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:13:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:42,960 INFO L225 Difference]: With dead ends: 10471 [2021-08-21 11:13:42,961 INFO L226 Difference]: Without dead ends: 10247 [2021-08-21 11:13:42,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 449.3ms TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:13:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2021-08-21 11:13:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 8240. [2021-08-21 11:13:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8239 states have (on average 2.8022818303192136) internal successors, (23088), 8239 states have internal predecessors, (23088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 23088 transitions. [2021-08-21 11:13:43,130 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 23088 transitions. Word has length 67 [2021-08-21 11:13:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:43,130 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 23088 transitions. [2021-08-21 11:13:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 23088 transitions. [2021-08-21 11:13:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:43,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:43,139 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:43,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2021-08-21 11:13:43,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-08-21 11:13:43,339 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash -511459778, now seen corresponding path program 103 times [2021-08-21 11:13:43,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:43,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312189608] [2021-08-21 11:13:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:43,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:43,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:43,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312189608] [2021-08-21 11:13:43,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312189608] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:43,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496435543] [2021-08-21 11:13:43,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:13:43,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:43,478 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:43,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-08-21 11:13:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:49,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:49,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:49,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496435543] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:49,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:49,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:49,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218919287] [2021-08-21 11:13:49,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:49,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:49,958 INFO L87 Difference]: Start difference. First operand 8240 states and 23088 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:50,383 INFO L93 Difference]: Finished difference Result 9964 states and 26548 transitions. [2021-08-21 11:13:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:13:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:50,398 INFO L225 Difference]: With dead ends: 9964 [2021-08-21 11:13:50,398 INFO L226 Difference]: Without dead ends: 9837 [2021-08-21 11:13:50,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 449.7ms TimeCoverageRelationStatistics Valid=391, Invalid=1091, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:13:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2021-08-21 11:13:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 8240. [2021-08-21 11:13:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8239 states have (on average 2.8022818303192136) internal successors, (23088), 8239 states have internal predecessors, (23088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 23088 transitions. [2021-08-21 11:13:50,519 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 23088 transitions. Word has length 67 [2021-08-21 11:13:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:50,519 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 23088 transitions. [2021-08-21 11:13:50,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 23088 transitions. [2021-08-21 11:13:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:50,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:50,529 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:50,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2021-08-21 11:13:50,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-08-21 11:13:50,729 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:50,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2001176526, now seen corresponding path program 104 times [2021-08-21 11:13:50,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:50,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168709764] [2021-08-21 11:13:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:50,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:50,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:50,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168709764] [2021-08-21 11:13:50,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168709764] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:50,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618472037] [2021-08-21 11:13:50,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:13:50,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:50,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:50,916 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:50,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2021-08-21 11:13:56,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:13:56,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:13:56,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:13:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:13:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:57,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618472037] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:57,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:13:57,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:13:57,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813862540] [2021-08-21 11:13:57,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:13:57,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:13:57,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:13:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:13:57,409 INFO L87 Difference]: Start difference. First operand 8240 states and 23088 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:13:57,856 INFO L93 Difference]: Finished difference Result 10435 states and 27553 transitions. [2021-08-21 11:13:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:13:57,857 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:13:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:13:57,871 INFO L225 Difference]: With dead ends: 10435 [2021-08-21 11:13:57,871 INFO L226 Difference]: Without dead ends: 10182 [2021-08-21 11:13:57,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 455.5ms TimeCoverageRelationStatistics Valid=384, Invalid=1098, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:13:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2021-08-21 11:13:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 8190. [2021-08-21 11:13:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 8189 states have (on average 2.806569788740994) internal successors, (22983), 8189 states have internal predecessors, (22983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 22983 transitions. [2021-08-21 11:13:57,975 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 22983 transitions. Word has length 67 [2021-08-21 11:13:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:13:57,975 INFO L470 AbstractCegarLoop]: Abstraction has 8190 states and 22983 transitions. [2021-08-21 11:13:57,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:13:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 22983 transitions. [2021-08-21 11:13:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:13:57,983 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:13:57,983 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:13:58,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2021-08-21 11:13:58,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:58,184 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:13:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:13:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1971669876, now seen corresponding path program 105 times [2021-08-21 11:13:58,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:13:58,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582082551] [2021-08-21 11:13:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:13:58,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:13:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:13:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:13:58,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:13:58,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582082551] [2021-08-21 11:13:58,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582082551] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:13:58,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288226229] [2021-08-21 11:13:58,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:13:58,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:13:58,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:13:58,353 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:13:58,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2021-08-21 11:14:04,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-21 11:14:04,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:04,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:04,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:04,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288226229] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:04,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:04,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:04,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037086441] [2021-08-21 11:14:04,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:04,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:04,873 INFO L87 Difference]: Start difference. First operand 8190 states and 22983 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:05,213 INFO L93 Difference]: Finished difference Result 9824 states and 26273 transitions. [2021-08-21 11:14:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 11:14:05,214 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:05,228 INFO L225 Difference]: With dead ends: 9824 [2021-08-21 11:14:05,228 INFO L226 Difference]: Without dead ends: 9697 [2021-08-21 11:14:05,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 356.3ms TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:14:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9697 states. [2021-08-21 11:14:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9697 to 8165. [2021-08-21 11:14:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8165 states, 8164 states have (on average 2.8090396864282217) internal successors, (22933), 8164 states have internal predecessors, (22933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 22933 transitions. [2021-08-21 11:14:05,341 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 22933 transitions. Word has length 67 [2021-08-21 11:14:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:05,341 INFO L470 AbstractCegarLoop]: Abstraction has 8165 states and 22933 transitions. [2021-08-21 11:14:05,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 22933 transitions. [2021-08-21 11:14:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:05,351 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:05,351 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:05,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2021-08-21 11:14:05,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:05,559 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:05,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1323792514, now seen corresponding path program 106 times [2021-08-21 11:14:05,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:05,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104049534] [2021-08-21 11:14:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:05,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:05,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:05,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104049534] [2021-08-21 11:14:05,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104049534] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:05,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084208804] [2021-08-21 11:14:05,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:14:05,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:05,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:05,780 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:05,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2021-08-21 11:14:11,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:14:11,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:11,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:12,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084208804] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:12,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:12,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:12,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922606253] [2021-08-21 11:14:12,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:12,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:12,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:12,441 INFO L87 Difference]: Start difference. First operand 8165 states and 22933 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:12,878 INFO L93 Difference]: Finished difference Result 11674 states and 30543 transitions. [2021-08-21 11:14:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:14:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:12,896 INFO L225 Difference]: With dead ends: 11674 [2021-08-21 11:14:12,896 INFO L226 Difference]: Without dead ends: 11547 [2021-08-21 11:14:12,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 453.9ms TimeCoverageRelationStatistics Valid=382, Invalid=1100, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 11:14:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11547 states. [2021-08-21 11:14:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11547 to 8215. [2021-08-21 11:14:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8215 states, 8214 states have (on average 2.815071828585342) internal successors, (23123), 8214 states have internal predecessors, (23123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 23123 transitions. [2021-08-21 11:14:13,019 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 23123 transitions. Word has length 67 [2021-08-21 11:14:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:13,019 INFO L470 AbstractCegarLoop]: Abstraction has 8215 states and 23123 transitions. [2021-08-21 11:14:13,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 23123 transitions. [2021-08-21 11:14:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:13,028 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:13,028 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:13,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2021-08-21 11:14:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:13,229 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:13,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1845120964, now seen corresponding path program 107 times [2021-08-21 11:14:13,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:13,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98159005] [2021-08-21 11:14:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:13,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:13,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:13,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98159005] [2021-08-21 11:14:13,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98159005] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:13,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359022539] [2021-08-21 11:14:13,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:14:13,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:13,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:13,361 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:13,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2021-08-21 11:14:19,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-21 11:14:19,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:19,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:19,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:20,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359022539] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:20,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:20,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:20,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456255018] [2021-08-21 11:14:20,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:20,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:20,074 INFO L87 Difference]: Start difference. First operand 8215 states and 23123 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:20,579 INFO L93 Difference]: Finished difference Result 12389 states and 33183 transitions. [2021-08-21 11:14:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:14:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:20,598 INFO L225 Difference]: With dead ends: 12389 [2021-08-21 11:14:20,599 INFO L226 Difference]: Without dead ends: 12262 [2021-08-21 11:14:20,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 508.0ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 11:14:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12262 states. [2021-08-21 11:14:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12262 to 8335. [2021-08-21 11:14:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8335 states, 8334 states have (on average 2.8177345812335015) internal successors, (23483), 8334 states have internal predecessors, (23483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8335 states to 8335 states and 23483 transitions. [2021-08-21 11:14:20,724 INFO L78 Accepts]: Start accepts. Automaton has 8335 states and 23483 transitions. Word has length 67 [2021-08-21 11:14:20,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:20,724 INFO L470 AbstractCegarLoop]: Abstraction has 8335 states and 23483 transitions. [2021-08-21 11:14:20,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 8335 states and 23483 transitions. [2021-08-21 11:14:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:20,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:20,733 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:20,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2021-08-21 11:14:20,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2021-08-21 11:14:20,934 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1790273592, now seen corresponding path program 108 times [2021-08-21 11:14:20,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:20,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894939676] [2021-08-21 11:14:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:20,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:21,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:21,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894939676] [2021-08-21 11:14:21,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894939676] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:21,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585021184] [2021-08-21 11:14:21,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 11:14:21,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:21,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:21,139 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:21,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2021-08-21 11:14:27,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-21 11:14:27,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:27,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:27,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585021184] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:27,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:27,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:27,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971878185] [2021-08-21 11:14:27,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:27,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:27,893 INFO L87 Difference]: Start difference. First operand 8335 states and 23483 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:28,685 INFO L93 Difference]: Finished difference Result 16909 states and 44694 transitions. [2021-08-21 11:14:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 11:14:28,685 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:28,711 INFO L225 Difference]: With dead ends: 16909 [2021-08-21 11:14:28,711 INFO L226 Difference]: Without dead ends: 16042 [2021-08-21 11:14:28,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 749.2ms TimeCoverageRelationStatistics Valid=706, Invalid=2264, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 11:14:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16042 states. [2021-08-21 11:14:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16042 to 8140. [2021-08-21 11:14:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 8139 states have (on average 2.811524757341197) internal successors, (22883), 8139 states have internal predecessors, (22883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 22883 transitions. [2021-08-21 11:14:28,860 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 22883 transitions. Word has length 67 [2021-08-21 11:14:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:28,860 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 22883 transitions. [2021-08-21 11:14:28,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 22883 transitions. [2021-08-21 11:14:28,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:28,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:28,869 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:28,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2021-08-21 11:14:29,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-08-21 11:14:29,070 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1645391514, now seen corresponding path program 109 times [2021-08-21 11:14:29,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:29,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019820892] [2021-08-21 11:14:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:29,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:29,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:29,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019820892] [2021-08-21 11:14:29,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019820892] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:29,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484955262] [2021-08-21 11:14:29,193 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 11:14:29,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:29,194 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:29,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2021-08-21 11:14:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:35,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:35,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:35,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484955262] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:35,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:35,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:35,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757568078] [2021-08-21 11:14:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:35,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:35,897 INFO L87 Difference]: Start difference. First operand 8140 states and 22883 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:36,498 INFO L93 Difference]: Finished difference Result 12341 states and 31857 transitions. [2021-08-21 11:14:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:14:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:36,516 INFO L225 Difference]: With dead ends: 12341 [2021-08-21 11:14:36,516 INFO L226 Difference]: Without dead ends: 12117 [2021-08-21 11:14:36,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 568.0ms TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 11:14:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12117 states. [2021-08-21 11:14:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12117 to 8440. [2021-08-21 11:14:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8440 states, 8439 states have (on average 2.8170399336414267) internal successors, (23773), 8439 states have internal predecessors, (23773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8440 states to 8440 states and 23773 transitions. [2021-08-21 11:14:36,702 INFO L78 Accepts]: Start accepts. Automaton has 8440 states and 23773 transitions. Word has length 67 [2021-08-21 11:14:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:36,702 INFO L470 AbstractCegarLoop]: Abstraction has 8440 states and 23773 transitions. [2021-08-21 11:14:36,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 8440 states and 23773 transitions. [2021-08-21 11:14:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:36,711 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:36,711 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:36,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2021-08-21 11:14:36,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-08-21 11:14:36,912 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1269691020, now seen corresponding path program 110 times [2021-08-21 11:14:36,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:36,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640533127] [2021-08-21 11:14:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:36,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:37,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:37,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640533127] [2021-08-21 11:14:37,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640533127] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:37,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895059602] [2021-08-21 11:14:37,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 11:14:37,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:37,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:37,065 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:37,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2021-08-21 11:14:43,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 11:14:43,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:43,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:43,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:43,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895059602] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:43,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:43,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:43,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544788536] [2021-08-21 11:14:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:43,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:43,900 INFO L87 Difference]: Start difference. First operand 8440 states and 23773 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:44,522 INFO L93 Difference]: Finished difference Result 10969 states and 28958 transitions. [2021-08-21 11:14:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:14:44,522 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:44,539 INFO L225 Difference]: With dead ends: 10969 [2021-08-21 11:14:44,539 INFO L226 Difference]: Without dead ends: 10842 [2021-08-21 11:14:44,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 599.8ms TimeCoverageRelationStatistics Valid=482, Invalid=1498, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:14:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2021-08-21 11:14:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 8415. [2021-08-21 11:14:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8415 states, 8414 states have (on average 2.8194675540765393) internal successors, (23723), 8414 states have internal predecessors, (23723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 23723 transitions. [2021-08-21 11:14:44,658 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 23723 transitions. Word has length 67 [2021-08-21 11:14:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:44,658 INFO L470 AbstractCegarLoop]: Abstraction has 8415 states and 23723 transitions. [2021-08-21 11:14:44,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 23723 transitions. [2021-08-21 11:14:44,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:44,667 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:44,667 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:44,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2021-08-21 11:14:44,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-08-21 11:14:44,868 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:44,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:44,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1276502926, now seen corresponding path program 111 times [2021-08-21 11:14:44,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:44,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832891641] [2021-08-21 11:14:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:44,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:45,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:45,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832891641] [2021-08-21 11:14:45,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832891641] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:45,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581349090] [2021-08-21 11:14:45,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 11:14:45,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:45,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:45,093 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:45,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2021-08-21 11:14:51,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 11:14:51,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:51,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:51,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:14:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:51,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581349090] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:51,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:14:51,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:14:51,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948003261] [2021-08-21 11:14:51,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:14:51,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:14:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:14:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:14:51,985 INFO L87 Difference]: Start difference. First operand 8415 states and 23723 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:14:52,699 INFO L93 Difference]: Finished difference Result 12886 states and 33662 transitions. [2021-08-21 11:14:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:14:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:14:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:14:52,718 INFO L225 Difference]: With dead ends: 12886 [2021-08-21 11:14:52,719 INFO L226 Difference]: Without dead ends: 12662 [2021-08-21 11:14:52,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 673.6ms TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:14:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2021-08-21 11:14:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 8565. [2021-08-21 11:14:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8565 states, 8564 states have (on average 2.8278841662774403) internal successors, (24218), 8564 states have internal predecessors, (24218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8565 states to 8565 states and 24218 transitions. [2021-08-21 11:14:52,848 INFO L78 Accepts]: Start accepts. Automaton has 8565 states and 24218 transitions. Word has length 67 [2021-08-21 11:14:52,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:14:52,848 INFO L470 AbstractCegarLoop]: Abstraction has 8565 states and 24218 transitions. [2021-08-21 11:14:52,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:14:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8565 states and 24218 transitions. [2021-08-21 11:14:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:14:52,857 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:14:52,857 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:14:52,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2021-08-21 11:14:53,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-08-21 11:14:53,058 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:14:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:14:53,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1892410552, now seen corresponding path program 112 times [2021-08-21 11:14:53,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:14:53,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085000057] [2021-08-21 11:14:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:14:53,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:14:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:14:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:14:53,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:14:53,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085000057] [2021-08-21 11:14:53,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085000057] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:14:53,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028388318] [2021-08-21 11:14:53,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 11:14:53,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:14:53,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:14:53,190 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:14:53,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2021-08-21 11:14:59,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 11:14:59,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:14:59,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:14:59,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:15:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:15:00,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028388318] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:15:00,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 11:15:00,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-21 11:15:00,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295874502] [2021-08-21 11:15:00,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-21 11:15:00,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:15:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-21 11:15:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-08-21 11:15:00,051 INFO L87 Difference]: Start difference. First operand 8565 states and 24218 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:15:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:15:00,784 INFO L93 Difference]: Finished difference Result 13526 states and 36122 transitions. [2021-08-21 11:15:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:15:00,784 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-08-21 11:15:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:15:00,804 INFO L225 Difference]: With dead ends: 13526 [2021-08-21 11:15:00,804 INFO L226 Difference]: Without dead ends: 13302 [2021-08-21 11:15:00,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 631.7ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:15:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13302 states. [2021-08-21 11:15:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13302 to 8805. [2021-08-21 11:15:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 8804 states have (on average 2.8359836437982735) internal successors, (24968), 8804 states have internal predecessors, (24968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:15:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 24968 transitions. [2021-08-21 11:15:00,943 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 24968 transitions. Word has length 67 [2021-08-21 11:15:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:15:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 8805 states and 24968 transitions. [2021-08-21 11:15:00,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:15:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 24968 transitions. [2021-08-21 11:15:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 11:15:00,953 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:15:00,953 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:15:00,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2021-08-21 11:15:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-08-21 11:15:01,154 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 11:15:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:15:01,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1742984004, now seen corresponding path program 113 times [2021-08-21 11:15:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:15:01,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124179397] [2021-08-21 11:15:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:15:01,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:15:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:15:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:15:01,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:15:01,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124179397] [2021-08-21 11:15:01,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124179397] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 11:15:01,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817632743] [2021-08-21 11:15:01,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 11:15:01,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 11:15:01,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:15:01,378 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 11:15:01,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process Received shutdown request... [2021-08-21 11:15:08,029 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-21 11:15:08,036 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-21 11:15:08,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 11:15:08,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 11:15:08,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 11:15:08,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 11:15:08,138 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-08-21 11:15:08,139 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:15:08,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2021-08-21 11:15:08,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-08-21 11:15:08,340 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 68 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. [2021-08-21 11:15:08,343 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:15:08,343 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:15:08,347 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:15:08,347 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:15:08,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:15:08 BasicIcfg [2021-08-21 11:15:08,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:15:08,349 INFO L168 Benchmark]: Toolchain (without parser) took 754475.17 ms. Allocated memory was 194.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 157.2 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 618.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:15:08,349 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 194.0 MB. Free memory is still 175.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:15:08,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.87 ms. Allocated memory is still 194.0 MB. Free memory was 157.0 MB in the beginning and 168.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:15:08,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.07 ms. Allocated memory is still 194.0 MB. Free memory was 168.7 MB in the beginning and 167.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:15:08,349 INFO L168 Benchmark]: Boogie Preprocessor took 14.96 ms. Allocated memory is still 194.0 MB. Free memory was 167.1 MB in the beginning and 165.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:15:08,350 INFO L168 Benchmark]: RCFGBuilder took 308.34 ms. Allocated memory is still 194.0 MB. Free memory was 165.5 MB in the beginning and 143.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:15:08,350 INFO L168 Benchmark]: TraceAbstraction took 753827.16 ms. Allocated memory was 194.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 143.0 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 603.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:15:08,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 194.0 MB. Free memory is still 175.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.87 ms. Allocated memory is still 194.0 MB. Free memory was 157.0 MB in the beginning and 168.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.07 ms. Allocated memory is still 194.0 MB. Free memory was 168.7 MB in the beginning and 167.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.96 ms. Allocated memory is still 194.0 MB. Free memory was 167.1 MB in the beginning and 165.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 308.34 ms. Allocated memory is still 194.0 MB. Free memory was 165.5 MB in the beginning and 143.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 753827.16 ms. Allocated memory was 194.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 143.0 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 603.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 68 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 68 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 68 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 753740.0ms, OverallIterations: 150, TraceHistogramMax: 6, EmptinessCheckTime: 792.5ms, AutomataDifference: 189110.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 60.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13498 SDtfs, 121539 SDslu, 153608 SDs, 0 SdLazy, 24780 SolverSat, 9585 SolverUnsat, 41 SolverUnknown, 0 SolverNotchecked, 97508.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13266 GetRequests, 7564 SyntacticMatches, 19 SemanticMatches, 5683 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 73247 ImplicationChecksByTransitivity, 100292.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8805occurred in iteration=149, InterpolantAutomatonStates: 4675, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11775.2ms AutomataMinimizationTime, 149 MinimizatonAttempts, 355789 StatesRemovedByMinimization, 149 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1278.4ms SsaConstructionTime, 2974.2ms SatisfiabilityAnalysisTime, 80738.7ms InterpolantComputationTime, 17527 NumberOfCodeBlocks, 17527 NumberOfCodeBlocksAsserted, 550 NumberOfCheckSat, 17236 ConstructedInterpolants, 5 QuantifiedInterpolants, 142149 SizeOfPredicates, 292 NumberOfNonLiveVariables, 21579 ConjunctsInSsa, 1809 ConjunctsInUnsatCore, 291 InterpolantComputations, 8 PerfectInterpolantSequences, 103/6274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown