/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 07:28:38,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 07:28:38,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 07:28:38,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 07:28:38,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 07:28:38,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 07:28:38,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 07:28:38,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 07:28:38,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 07:28:38,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 07:28:38,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 07:28:38,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 07:28:38,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 07:28:38,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 07:28:38,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 07:28:38,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 07:28:38,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 07:28:38,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 07:28:38,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 07:28:38,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 07:28:38,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 07:28:38,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 07:28:38,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 07:28:38,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 07:28:38,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 07:28:38,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 07:28:38,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 07:28:38,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 07:28:38,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 07:28:38,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 07:28:38,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 07:28:38,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 07:28:38,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 07:28:38,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 07:28:38,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 07:28:38,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 07:28:38,158 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-Separate.epf [2021-06-05 07:28:38,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 07:28:38,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 07:28:38,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 07:28:38,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 07:28:38,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 07:28:38,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 07:28:38,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 07:28:38,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 07:28:38,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:28:38,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 07:28:38,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 07:28:38,194 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 07:28:38,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 07:28:38,194 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 07:28:38,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 07:28:38,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 07:28:38,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 07:28:38,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 07:28:38,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 07:28:38,549 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 07:28:38,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-06-05 07:28:38,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa28aabb/058f3163fcf74f6483464296af8c9052/FLAGc0f8cba0b [2021-06-05 07:28:39,142 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 07:28:39,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-06-05 07:28:39,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa28aabb/058f3163fcf74f6483464296af8c9052/FLAGc0f8cba0b [2021-06-05 07:28:39,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa28aabb/058f3163fcf74f6483464296af8c9052 [2021-06-05 07:28:39,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 07:28:39,522 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 07:28:39,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 07:28:39,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 07:28:39,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 07:28:39,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c789592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39, skipping insertion in model container [2021-06-05 07:28:39,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 07:28:39,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 07:28:39,801 WARN L224 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_longer-2.i[30929,30942] [2021-06-05 07:28:39,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:28:39,809 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 07:28:39,840 WARN L224 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_longer-2.i[30929,30942] [2021-06-05 07:28:39,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:28:39,894 INFO L208 MainTranslator]: Completed translation [2021-06-05 07:28:39,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39 WrapperNode [2021-06-05 07:28:39,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 07:28:39,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 07:28:39,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 07:28:39,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 07:28:39,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 07:28:39,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 07:28:39,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 07:28:39,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 07:28:39,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 07:28:39,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 07:28:39,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 07:28:39,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 07:28:39,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:28:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-05 07:28:40,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-05 07:28:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-05 07:28:40,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-05 07:28:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 07:28:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 07:28:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 07:28:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 07:28:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 07:28:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 07:28:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 07:28:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 07:28:40,018 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 07:28:40,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 07:28:40,255 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 07:28:40,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:28:40 BoogieIcfgContainer [2021-06-05 07:28:40,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 07:28:40,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 07:28:40,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 07:28:40,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 07:28:40,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:28:39" (1/3) ... [2021-06-05 07:28:40,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5571f80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:28:40, skipping insertion in model container [2021-06-05 07:28:40,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (2/3) ... [2021-06-05 07:28:40,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5571f80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:28:40, skipping insertion in model container [2021-06-05 07:28:40,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:28:40" (3/3) ... [2021-06-05 07:28:40,261 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2021-06-05 07:28:40,264 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 07:28:40,265 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 07:28:40,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 07:28:40,265 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 07:28:40,295 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,296 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,297 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,299 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,300 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,301 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,304 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,304 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,304 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,304 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,304 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,304 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,307 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,307 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,307 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,307 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,307 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,308 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,309 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 07:28:40,333 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 07:28:40,344 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:28:40,345 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:28:40,345 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:28:40,345 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:28:40,345 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:28:40,345 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:28:40,345 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:28:40,345 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:28:40,351 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-06-05 07:28:40,443 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-05 07:28:40,464 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:40,465 INFO L521 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] [2021-06-05 07:28:40,465 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2133486681, now seen corresponding path program 1 times [2021-06-05 07:28:40,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:40,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268224454] [2021-06-05 07:28:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:40,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:40,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268224454] [2021-06-05 07:28:40,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268224454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:40,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:40,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 07:28:40,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145029677] [2021-06-05 07:28:40,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 07:28:40,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 07:28:40,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:28:40,805 INFO L87 Difference]: Start difference. First operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 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) [2021-06-05 07:28:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:40,942 INFO L93 Difference]: Finished difference Result 3996 states and 11572 transitions. [2021-06-05 07:28:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 07:28:40,943 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 [2021-06-05 07:28:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:40,957 INFO L225 Difference]: With dead ends: 3996 [2021-06-05 07:28:40,957 INFO L226 Difference]: Without dead ends: 1425 [2021-06-05 07:28:40,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:28:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-06-05 07:28:41,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-06-05 07:28:41,040 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) [2021-06-05 07:28:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-06-05 07:28:41,044 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-06-05 07:28:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,044 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-06-05 07:28:41,044 INFO L483 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) [2021-06-05 07:28:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-06-05 07:28:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 07:28:41,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,047 INFO L521 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] [2021-06-05 07:28:41,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 07:28:41,048 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,048 INFO L82 PathProgramCache]: Analyzing trace with hash -730808461, now seen corresponding path program 1 times [2021-06-05 07:28:41,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450813533] [2021-06-05 07:28:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:41,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450813533] [2021-06-05 07:28:41,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450813533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:28:41,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53216084] [2021-06-05 07:28:41,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:28:41,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:28:41,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:28:41,158 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) [2021-06-05 07:28:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:41,228 INFO L93 Difference]: Finished difference Result 2025 states and 5412 transitions. [2021-06-05 07:28:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:28:41,228 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 [2021-06-05 07:28:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:41,234 INFO L225 Difference]: With dead ends: 2025 [2021-06-05 07:28:41,234 INFO L226 Difference]: Without dead ends: 1758 [2021-06-05 07:28:41,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:28:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2021-06-05 07:28:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1270. [2021-06-05 07:28:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.7328605200945626) internal successors, (3468), 1269 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3468 transitions. [2021-06-05 07:28:41,294 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3468 transitions. Word has length 37 [2021-06-05 07:28:41,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,295 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3468 transitions. [2021-06-05 07:28:41,295 INFO L483 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) [2021-06-05 07:28:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3468 transitions. [2021-06-05 07:28:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 07:28:41,296 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,297 INFO L521 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] [2021-06-05 07:28:41,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 07:28:41,297 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1453251019, now seen corresponding path program 1 times [2021-06-05 07:28:41,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166781330] [2021-06-05 07:28:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:41,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166781330] [2021-06-05 07:28:41,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166781330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:28:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474128674] [2021-06-05 07:28:41,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:28:41,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:28:41,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:28:41,369 INFO L87 Difference]: Start difference. First operand 1270 states and 3468 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) [2021-06-05 07:28:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:41,432 INFO L93 Difference]: Finished difference Result 2062 states and 5444 transitions. [2021-06-05 07:28:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:28:41,433 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 [2021-06-05 07:28:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:41,438 INFO L225 Difference]: With dead ends: 2062 [2021-06-05 07:28:41,438 INFO L226 Difference]: Without dead ends: 1758 [2021-06-05 07:28:41,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:28:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2021-06-05 07:28:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1397. [2021-06-05 07:28:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.683381088825215) internal successors, (3746), 1396 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3746 transitions. [2021-06-05 07:28:41,464 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3746 transitions. Word has length 37 [2021-06-05 07:28:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,464 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3746 transitions. [2021-06-05 07:28:41,465 INFO L483 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) [2021-06-05 07:28:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3746 transitions. [2021-06-05 07:28:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 07:28:41,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,467 INFO L521 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] [2021-06-05 07:28:41,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 07:28:41,467 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1253658815, now seen corresponding path program 2 times [2021-06-05 07:28:41,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598717454] [2021-06-05 07:28:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:41,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598717454] [2021-06-05 07:28:41,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598717454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:28:41,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702644100] [2021-06-05 07:28:41,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:28:41,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:28:41,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:28:41,547 INFO L87 Difference]: Start difference. First operand 1397 states and 3746 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) [2021-06-05 07:28:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:41,631 INFO L93 Difference]: Finished difference Result 2318 states and 6148 transitions. [2021-06-05 07:28:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:28:41,632 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 [2021-06-05 07:28:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:41,638 INFO L225 Difference]: With dead ends: 2318 [2021-06-05 07:28:41,638 INFO L226 Difference]: Without dead ends: 1987 [2021-06-05 07:28:41,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:28:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-06-05 07:28:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1514. [2021-06-05 07:28:41,659 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) [2021-06-05 07:28:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-06-05 07:28:41,663 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-06-05 07:28:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,663 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-06-05 07:28:41,663 INFO L483 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) [2021-06-05 07:28:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-06-05 07:28:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 07:28:41,664 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,664 INFO L521 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] [2021-06-05 07:28:41,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 07:28:41,665 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1553921205, now seen corresponding path program 1 times [2021-06-05 07:28:41,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664442413] [2021-06-05 07:28:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:41,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664442413] [2021-06-05 07:28:41,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664442413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:28:41,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101637897] [2021-06-05 07:28:41,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:28:41,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:28:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:28:41,731 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) [2021-06-05 07:28:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:41,791 INFO L93 Difference]: Finished difference Result 2203 states and 5812 transitions. [2021-06-05 07:28:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 07:28:41,791 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 [2021-06-05 07:28:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:41,798 INFO L225 Difference]: With dead ends: 2203 [2021-06-05 07:28:41,798 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 07:28:41,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:28:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 07:28:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1539. [2021-06-05 07:28:41,821 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) [2021-06-05 07:28:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4143 transitions. [2021-06-05 07:28:41,824 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4143 transitions. Word has length 42 [2021-06-05 07:28:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,825 INFO L482 AbstractCegarLoop]: Abstraction has 1539 states and 4143 transitions. [2021-06-05 07:28:41,825 INFO L483 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) [2021-06-05 07:28:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4143 transitions. [2021-06-05 07:28:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 07:28:41,826 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,826 INFO L521 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] [2021-06-05 07:28:41,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 07:28:41,826 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash 591722429, now seen corresponding path program 2 times [2021-06-05 07:28:41,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991376986] [2021-06-05 07:28:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:41,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991376986] [2021-06-05 07:28:41,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991376986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:28:41,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485498574] [2021-06-05 07:28:41,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:28:41,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:28:41,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:28:41,900 INFO L87 Difference]: Start difference. First operand 1539 states and 4143 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) [2021-06-05 07:28:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:42,037 INFO L93 Difference]: Finished difference Result 2907 states and 7732 transitions. [2021-06-05 07:28:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:28:42,037 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 [2021-06-05 07:28:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:42,045 INFO L225 Difference]: With dead ends: 2907 [2021-06-05 07:28:42,045 INFO L226 Difference]: Without dead ends: 2461 [2021-06-05 07:28:42,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-06-05 07:28:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 1731. [2021-06-05 07:28:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1730 states have (on average 2.707514450867052) internal successors, (4684), 1730 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 4684 transitions. [2021-06-05 07:28:42,083 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 4684 transitions. Word has length 42 [2021-06-05 07:28:42,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:42,083 INFO L482 AbstractCegarLoop]: Abstraction has 1731 states and 4684 transitions. [2021-06-05 07:28:42,083 INFO L483 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) [2021-06-05 07:28:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 4684 transitions. [2021-06-05 07:28:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 07:28:42,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:42,086 INFO L521 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] [2021-06-05 07:28:42,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 07:28:42,086 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash -535397893, now seen corresponding path program 3 times [2021-06-05 07:28:42,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:42,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663211148] [2021-06-05 07:28:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:42,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:42,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663211148] [2021-06-05 07:28:42,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663211148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:42,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:42,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:28:42,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912610384] [2021-06-05 07:28:42,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:28:42,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:42,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:28:42,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:28:42,176 INFO L87 Difference]: Start difference. First operand 1731 states and 4684 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) [2021-06-05 07:28:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:42,300 INFO L93 Difference]: Finished difference Result 3149 states and 8380 transitions. [2021-06-05 07:28:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:28:42,301 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 [2021-06-05 07:28:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:42,309 INFO L225 Difference]: With dead ends: 3149 [2021-06-05 07:28:42,310 INFO L226 Difference]: Without dead ends: 2834 [2021-06-05 07:28:42,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:42,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-06-05 07:28:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1941. [2021-06-05 07:28:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 2.6943298969072167) internal successors, (5227), 1940 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 5227 transitions. [2021-06-05 07:28:42,349 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 5227 transitions. Word has length 42 [2021-06-05 07:28:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:42,349 INFO L482 AbstractCegarLoop]: Abstraction has 1941 states and 5227 transitions. [2021-06-05 07:28:42,349 INFO L483 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) [2021-06-05 07:28:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 5227 transitions. [2021-06-05 07:28:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:42,351 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:42,351 INFO L521 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] [2021-06-05 07:28:42,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 07:28:42,351 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:42,352 INFO L82 PathProgramCache]: Analyzing trace with hash 847069600, now seen corresponding path program 1 times [2021-06-05 07:28:42,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:42,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597351639] [2021-06-05 07:28:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:42,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:42,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597351639] [2021-06-05 07:28:42,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597351639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:42,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316980964] [2021-06-05 07:28:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:42,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:42,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316980964] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:42,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:42,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:42,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713907324] [2021-06-05 07:28:42,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:42,722 INFO L87 Difference]: Start difference. First operand 1941 states and 5227 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) [2021-06-05 07:28:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:42,892 INFO L93 Difference]: Finished difference Result 3261 states and 8492 transitions. [2021-06-05 07:28:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:28:42,892 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 [2021-06-05 07:28:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:42,901 INFO L225 Difference]: With dead ends: 3261 [2021-06-05 07:28:42,901 INFO L226 Difference]: Without dead ends: 2781 [2021-06-05 07:28:42,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 198.2ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:28:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-06-05 07:28:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2030. [2021-06-05 07:28:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 2.6638738294726467) internal successors, (5405), 2029 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 5405 transitions. [2021-06-05 07:28:42,952 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 5405 transitions. Word has length 47 [2021-06-05 07:28:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:42,952 INFO L482 AbstractCegarLoop]: Abstraction has 2030 states and 5405 transitions. [2021-06-05 07:28:42,953 INFO L483 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) [2021-06-05 07:28:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 5405 transitions. [2021-06-05 07:28:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:42,957 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:42,957 INFO L521 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] [2021-06-05 07:28:43,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-06-05 07:28:43,176 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1597229004, now seen corresponding path program 2 times [2021-06-05 07:28:43,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:43,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788674573] [2021-06-05 07:28:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:43,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:43,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788674573] [2021-06-05 07:28:43,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788674573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:43,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531914043] [2021-06-05 07:28:43,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:43,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:43,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:43,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:43,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:43,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531914043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:43,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:43,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:43,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646732784] [2021-06-05 07:28:43,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:43,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:43,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:43,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:43,549 INFO L87 Difference]: Start difference. First operand 2030 states and 5405 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) [2021-06-05 07:28:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:43,708 INFO L93 Difference]: Finished difference Result 3013 states and 7804 transitions. [2021-06-05 07:28:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:28:43,709 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 [2021-06-05 07:28:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:43,724 INFO L225 Difference]: With dead ends: 3013 [2021-06-05 07:28:43,724 INFO L226 Difference]: Without dead ends: 2861 [2021-06-05 07:28:43,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 155.6ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:28:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-06-05 07:28:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2064. [2021-06-05 07:28:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 2.6539020843431897) internal successors, (5475), 2063 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5475 transitions. [2021-06-05 07:28:43,764 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5475 transitions. Word has length 47 [2021-06-05 07:28:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:43,764 INFO L482 AbstractCegarLoop]: Abstraction has 2064 states and 5475 transitions. [2021-06-05 07:28:43,764 INFO L483 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) [2021-06-05 07:28:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5475 transitions. [2021-06-05 07:28:43,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:43,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:43,767 INFO L521 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] [2021-06-05 07:28:43,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:43,985 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1224443028, now seen corresponding path program 3 times [2021-06-05 07:28:43,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:43,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753918746] [2021-06-05 07:28:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:44,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:44,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753918746] [2021-06-05 07:28:44,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753918746] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:44,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687532184] [2021-06-05 07:28:44,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:44,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 07:28:44,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:44,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:44,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:44,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687532184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:44,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:44,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:44,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633141283] [2021-06-05 07:28:44,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:44,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:44,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:44,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:44,317 INFO L87 Difference]: Start difference. First operand 2064 states and 5475 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) [2021-06-05 07:28:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:44,487 INFO L93 Difference]: Finished difference Result 3525 states and 9020 transitions. [2021-06-05 07:28:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:28:44,488 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 [2021-06-05 07:28:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:44,496 INFO L225 Difference]: With dead ends: 3525 [2021-06-05 07:28:44,497 INFO L226 Difference]: Without dead ends: 3045 [2021-06-05 07:28:44,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 174.4ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:28:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-06-05 07:28:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2094. [2021-06-05 07:28:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 2.661729574773053) internal successors, (5571), 2093 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 5571 transitions. [2021-06-05 07:28:44,535 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 5571 transitions. Word has length 47 [2021-06-05 07:28:44,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:44,535 INFO L482 AbstractCegarLoop]: Abstraction has 2094 states and 5571 transitions. [2021-06-05 07:28:44,535 INFO L483 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) [2021-06-05 07:28:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 5571 transitions. [2021-06-05 07:28:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:44,537 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:44,537 INFO L521 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] [2021-06-05 07:28:44,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 07:28:44,753 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:44,753 INFO L82 PathProgramCache]: Analyzing trace with hash 511209706, now seen corresponding path program 4 times [2021-06-05 07:28:44,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:44,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122490571] [2021-06-05 07:28:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:44,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:44,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122490571] [2021-06-05 07:28:44,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122490571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:44,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790943108] [2021-06-05 07:28:44,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:44,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:44,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:44,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:44,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:45,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790943108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:45,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:45,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:45,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727401562] [2021-06-05 07:28:45,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:45,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:45,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:45,022 INFO L87 Difference]: Start difference. First operand 2094 states and 5571 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) [2021-06-05 07:28:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:45,349 INFO L93 Difference]: Finished difference Result 4570 states and 11964 transitions. [2021-06-05 07:28:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:28:45,349 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 [2021-06-05 07:28:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:45,354 INFO L225 Difference]: With dead ends: 4570 [2021-06-05 07:28:45,355 INFO L226 Difference]: Without dead ends: 3833 [2021-06-05 07:28:45,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 273.4ms TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:28:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-06-05 07:28:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2235. [2021-06-05 07:28:45,387 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) [2021-06-05 07:28:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 6024 transitions. [2021-06-05 07:28:45,391 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 6024 transitions. Word has length 47 [2021-06-05 07:28:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:45,391 INFO L482 AbstractCegarLoop]: Abstraction has 2235 states and 6024 transitions. [2021-06-05 07:28:45,391 INFO L483 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) [2021-06-05 07:28:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 6024 transitions. [2021-06-05 07:28:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:45,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:45,394 INFO L521 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] [2021-06-05 07:28:45,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:45,610 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 464719534, now seen corresponding path program 5 times [2021-06-05 07:28:45,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:45,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726550962] [2021-06-05 07:28:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:45,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:45,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726550962] [2021-06-05 07:28:45,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726550962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:45,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208808171] [2021-06-05 07:28:45,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:45,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:45,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:45,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:45,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208808171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:45,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:45,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:45,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202001840] [2021-06-05 07:28:45,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:45,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:45,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:45,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:45,889 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) [2021-06-05 07:28:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:46,106 INFO L93 Difference]: Finished difference Result 4350 states and 11284 transitions. [2021-06-05 07:28:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:28:46,106 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 [2021-06-05 07:28:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:46,112 INFO L225 Difference]: With dead ends: 4350 [2021-06-05 07:28:46,112 INFO L226 Difference]: Without dead ends: 3958 [2021-06-05 07:28:46,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:28:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2021-06-05 07:28:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 2423. [2021-06-05 07:28:46,146 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) [2021-06-05 07:28:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-06-05 07:28:46,150 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-06-05 07:28:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:46,150 INFO L482 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-06-05 07:28:46,151 INFO L483 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) [2021-06-05 07:28:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-06-05 07:28:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:46,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:46,153 INFO L521 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] [2021-06-05 07:28:46,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:46,369 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:46,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:46,369 INFO L82 PathProgramCache]: Analyzing trace with hash 920243988, now seen corresponding path program 6 times [2021-06-05 07:28:46,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:46,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143217989] [2021-06-05 07:28:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:46,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:46,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143217989] [2021-06-05 07:28:46,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143217989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:46,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680948207] [2021-06-05 07:28:46,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:46,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 07:28:46,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:46,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:46,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:46,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680948207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:46,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:46,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:46,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011232785] [2021-06-05 07:28:46,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:46,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:46,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:46,631 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) [2021-06-05 07:28:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:47,168 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-06-05 07:28:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:28:47,169 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 [2021-06-05 07:28:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:47,176 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 07:28:47,176 INFO L226 Difference]: Without dead ends: 4898 [2021-06-05 07:28:47,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 447.6ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:28:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-06-05 07:28:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-06-05 07:28:47,220 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) [2021-06-05 07:28:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-06-05 07:28:47,224 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-06-05 07:28:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:47,225 INFO L482 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-06-05 07:28:47,225 INFO L483 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) [2021-06-05 07:28:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-06-05 07:28:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:47,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:47,228 INFO L521 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] [2021-06-05 07:28:47,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:47,447 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:47,448 INFO L82 PathProgramCache]: Analyzing trace with hash 117458473, now seen corresponding path program 7 times [2021-06-05 07:28:47,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:47,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225883315] [2021-06-05 07:28:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:47,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:47,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225883315] [2021-06-05 07:28:47,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225883315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:47,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178164341] [2021-06-05 07:28:47,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:47,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:47,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:47,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178164341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:47,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:47,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:47,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996527521] [2021-06-05 07:28:47,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:47,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:47,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:47,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:47,694 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) [2021-06-05 07:28:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:47,893 INFO L93 Difference]: Finished difference Result 4391 states and 11330 transitions. [2021-06-05 07:28:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:28:47,893 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 [2021-06-05 07:28:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:47,899 INFO L225 Difference]: With dead ends: 4391 [2021-06-05 07:28:47,899 INFO L226 Difference]: Without dead ends: 3999 [2021-06-05 07:28:47,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 208.8ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:28:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2021-06-05 07:28:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 2932. [2021-06-05 07:28:47,933 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) [2021-06-05 07:28:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 7896 transitions. [2021-06-05 07:28:47,937 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 7896 transitions. Word has length 52 [2021-06-05 07:28:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:47,937 INFO L482 AbstractCegarLoop]: Abstraction has 2932 states and 7896 transitions. [2021-06-05 07:28:47,937 INFO L483 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) [2021-06-05 07:28:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 7896 transitions. [2021-06-05 07:28:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:47,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:47,940 INFO L521 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] [2021-06-05 07:28:48,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 07:28:48,161 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1743674851, now seen corresponding path program 1 times [2021-06-05 07:28:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:48,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126955044] [2021-06-05 07:28:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:48,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:48,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126955044] [2021-06-05 07:28:48,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126955044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:48,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954975252] [2021-06-05 07:28:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:48,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:48,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:48,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954975252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:48,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:48,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:48,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155399447] [2021-06-05 07:28:48,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:48,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:48,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:48,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:48,431 INFO L87 Difference]: Start difference. First operand 2932 states and 7896 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) [2021-06-05 07:28:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:48,647 INFO L93 Difference]: Finished difference Result 4167 states and 10754 transitions. [2021-06-05 07:28:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:28:48,647 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 [2021-06-05 07:28:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:48,652 INFO L225 Difference]: With dead ends: 4167 [2021-06-05 07:28:48,652 INFO L226 Difference]: Without dead ends: 4015 [2021-06-05 07:28:48,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 202.2ms TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:28:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-06-05 07:28:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 2982. [2021-06-05 07:28:48,689 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) [2021-06-05 07:28:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 8006 transitions. [2021-06-05 07:28:48,694 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 8006 transitions. Word has length 52 [2021-06-05 07:28:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:48,694 INFO L482 AbstractCegarLoop]: Abstraction has 2982 states and 8006 transitions. [2021-06-05 07:28:48,694 INFO L483 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) [2021-06-05 07:28:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 8006 transitions. [2021-06-05 07:28:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:48,697 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:48,697 INFO L521 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] [2021-06-05 07:28:48,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 07:28:48,916 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1270346633, now seen corresponding path program 2 times [2021-06-05 07:28:48,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:48,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913326547] [2021-06-05 07:28:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:48,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:48,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913326547] [2021-06-05 07:28:48,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913326547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:48,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143709999] [2021-06-05 07:28:48,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:49,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:49,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:49,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:49,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:49,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143709999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:49,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:49,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:49,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104955650] [2021-06-05 07:28:49,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:49,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:49,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:49,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:49,182 INFO L87 Difference]: Start difference. First operand 2982 states and 8006 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) [2021-06-05 07:28:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:49,357 INFO L93 Difference]: Finished difference Result 4007 states and 10434 transitions. [2021-06-05 07:28:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:28:49,357 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 [2021-06-05 07:28:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:49,361 INFO L225 Difference]: With dead ends: 4007 [2021-06-05 07:28:49,361 INFO L226 Difference]: Without dead ends: 3855 [2021-06-05 07:28:49,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 183.5ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:28:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2021-06-05 07:28:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 2981. [2021-06-05 07:28:49,421 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) [2021-06-05 07:28:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 7999 transitions. [2021-06-05 07:28:49,427 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 7999 transitions. Word has length 52 [2021-06-05 07:28:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:49,427 INFO L482 AbstractCegarLoop]: Abstraction has 2981 states and 7999 transitions. [2021-06-05 07:28:49,427 INFO L483 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) [2021-06-05 07:28:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 7999 transitions. [2021-06-05 07:28:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:49,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:49,435 INFO L521 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] [2021-06-05 07:28:49,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 07:28:49,649 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1887847499, now seen corresponding path program 8 times [2021-06-05 07:28:49,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:49,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654845845] [2021-06-05 07:28:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:49,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:49,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654845845] [2021-06-05 07:28:49,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654845845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:49,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984518453] [2021-06-05 07:28:49,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:49,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:49,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:49,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:49,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:49,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984518453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:49,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:49,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:49,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925947169] [2021-06-05 07:28:49,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:49,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:49,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:49,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:49,947 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) [2021-06-05 07:28:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:50,197 INFO L93 Difference]: Finished difference Result 4796 states and 12155 transitions. [2021-06-05 07:28:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:28:50,197 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 [2021-06-05 07:28:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:50,202 INFO L225 Difference]: With dead ends: 4796 [2021-06-05 07:28:50,202 INFO L226 Difference]: Without dead ends: 4404 [2021-06-05 07:28:50,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 230.0ms TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2021-06-05 07:28:50,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2021-06-05 07:28:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 2956. [2021-06-05 07:28:50,240 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) [2021-06-05 07:28:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 7944 transitions. [2021-06-05 07:28:50,244 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 7944 transitions. Word has length 52 [2021-06-05 07:28:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:50,244 INFO L482 AbstractCegarLoop]: Abstraction has 2956 states and 7944 transitions. [2021-06-05 07:28:50,244 INFO L483 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) [2021-06-05 07:28:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 7944 transitions. [2021-06-05 07:28:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:50,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:50,249 INFO L521 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] [2021-06-05 07:28:50,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:50,465 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -275953247, now seen corresponding path program 9 times [2021-06-05 07:28:50,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:50,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377513017] [2021-06-05 07:28:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:50,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:50,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377513017] [2021-06-05 07:28:50,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377513017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:50,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352602704] [2021-06-05 07:28:50,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:50,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:28:50,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:50,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:50,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:50,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352602704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:50,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:50,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:50,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503126969] [2021-06-05 07:28:50,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:50,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:50,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:50,721 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) [2021-06-05 07:28:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:51,042 INFO L93 Difference]: Finished difference Result 5543 states and 14338 transitions. [2021-06-05 07:28:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:28:51,043 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 [2021-06-05 07:28:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:51,048 INFO L225 Difference]: With dead ends: 5543 [2021-06-05 07:28:51,048 INFO L226 Difference]: Without dead ends: 5063 [2021-06-05 07:28:51,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 277.4ms TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:28:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2021-06-05 07:28:51,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 3250. [2021-06-05 07:28:51,109 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) [2021-06-05 07:28:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 8880 transitions. [2021-06-05 07:28:51,113 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 8880 transitions. Word has length 52 [2021-06-05 07:28:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:51,113 INFO L482 AbstractCegarLoop]: Abstraction has 3250 states and 8880 transitions. [2021-06-05 07:28:51,113 INFO L483 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) [2021-06-05 07:28:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 8880 transitions. [2021-06-05 07:28:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:51,119 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:51,119 INFO L521 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] [2021-06-05 07:28:51,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-05 07:28:51,333 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:51,333 INFO L82 PathProgramCache]: Analyzing trace with hash 179571207, now seen corresponding path program 10 times [2021-06-05 07:28:51,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:51,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564131093] [2021-06-05 07:28:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:51,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:51,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564131093] [2021-06-05 07:28:51,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564131093] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:51,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665960222] [2021-06-05 07:28:51,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:51,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:51,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:51,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:51,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:51,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665960222] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:51,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:51,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:51,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932296327] [2021-06-05 07:28:51,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:51,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:51,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:51,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:51,586 INFO L87 Difference]: Start difference. First operand 3250 states and 8880 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) [2021-06-05 07:28:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:52,063 INFO L93 Difference]: Finished difference Result 6220 states and 16674 transitions. [2021-06-05 07:28:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:28:52,063 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 [2021-06-05 07:28:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:52,068 INFO L225 Difference]: With dead ends: 6220 [2021-06-05 07:28:52,068 INFO L226 Difference]: Without dead ends: 5544 [2021-06-05 07:28:52,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 413.1ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:28:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2021-06-05 07:28:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 3235. [2021-06-05 07:28:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 2.7680890538033394) internal successors, (8952), 3234 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 8952 transitions. [2021-06-05 07:28:52,121 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 8952 transitions. Word has length 52 [2021-06-05 07:28:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:52,121 INFO L482 AbstractCegarLoop]: Abstraction has 3235 states and 8952 transitions. [2021-06-05 07:28:52,121 INFO L483 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) [2021-06-05 07:28:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 8952 transitions. [2021-06-05 07:28:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:52,125 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:52,125 INFO L521 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] [2021-06-05 07:28:52,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:52,341 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash -97531933, now seen corresponding path program 3 times [2021-06-05 07:28:52,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:52,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105694772] [2021-06-05 07:28:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:52,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:52,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105694772] [2021-06-05 07:28:52,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105694772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:52,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681114611] [2021-06-05 07:28:52,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:52,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:28:52,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:52,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:52,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:52,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681114611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:52,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:52,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:52,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924815267] [2021-06-05 07:28:52,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:52,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:52,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:52,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:52,588 INFO L87 Difference]: Start difference. First operand 3235 states and 8952 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) [2021-06-05 07:28:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:52,891 INFO L93 Difference]: Finished difference Result 5134 states and 13421 transitions. [2021-06-05 07:28:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:28:52,891 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 [2021-06-05 07:28:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:52,896 INFO L225 Difference]: With dead ends: 5134 [2021-06-05 07:28:52,896 INFO L226 Difference]: Without dead ends: 4982 [2021-06-05 07:28:52,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 281.7ms TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:28:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-06-05 07:28:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 3275. [2021-06-05 07:28:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 2.775809407452657) internal successors, (9088), 3274 states have internal predecessors, (9088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 9088 transitions. [2021-06-05 07:28:52,937 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 9088 transitions. Word has length 52 [2021-06-05 07:28:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:52,938 INFO L482 AbstractCegarLoop]: Abstraction has 3275 states and 9088 transitions. [2021-06-05 07:28:52,938 INFO L483 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) [2021-06-05 07:28:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 9088 transitions. [2021-06-05 07:28:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:52,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:52,941 INFO L521 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] [2021-06-05 07:28:53,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 07:28:53,156 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1811410767, now seen corresponding path program 4 times [2021-06-05 07:28:53,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:53,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399497741] [2021-06-05 07:28:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:53,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:53,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399497741] [2021-06-05 07:28:53,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399497741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:53,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737948259] [2021-06-05 07:28:53,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:53,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:53,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:53,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:53,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:53,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737948259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:53,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:53,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 07:28:53,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907404399] [2021-06-05 07:28:53,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:28:53,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:28:53,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:53,390 INFO L87 Difference]: Start difference. First operand 3275 states and 9088 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) [2021-06-05 07:28:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:53,679 INFO L93 Difference]: Finished difference Result 5358 states and 14344 transitions. [2021-06-05 07:28:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:28:53,680 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 [2021-06-05 07:28:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:53,684 INFO L225 Difference]: With dead ends: 5358 [2021-06-05 07:28:53,684 INFO L226 Difference]: Without dead ends: 5206 [2021-06-05 07:28:53,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 273.8ms TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:28:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2021-06-05 07:28:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 3363. [2021-06-05 07:28:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.796252230814991) internal successors, (9401), 3362 states have internal predecessors, (9401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 9401 transitions. [2021-06-05 07:28:53,729 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 9401 transitions. Word has length 52 [2021-06-05 07:28:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:53,729 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 9401 transitions. [2021-06-05 07:28:53,729 INFO L483 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) [2021-06-05 07:28:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 9401 transitions. [2021-06-05 07:28:53,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:53,733 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:53,733 INFO L521 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] [2021-06-05 07:28:53,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:53,948 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1680986989, now seen corresponding path program 5 times [2021-06-05 07:28:53,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:53,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653322772] [2021-06-05 07:28:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:54,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:54,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653322772] [2021-06-05 07:28:54,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653322772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:54,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742191981] [2021-06-05 07:28:54,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:54,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:28:54,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:54,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:54,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:54,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742191981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:54,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:54,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:54,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516125699] [2021-06-05 07:28:54,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:54,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:54,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:54,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:54,220 INFO L87 Difference]: Start difference. First operand 3363 states and 9401 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) [2021-06-05 07:28:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:54,718 INFO L93 Difference]: Finished difference Result 6683 states and 18179 transitions. [2021-06-05 07:28:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:28:54,718 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 [2021-06-05 07:28:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:54,725 INFO L225 Difference]: With dead ends: 6683 [2021-06-05 07:28:54,725 INFO L226 Difference]: Without dead ends: 6253 [2021-06-05 07:28:54,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 479.5ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:28:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2021-06-05 07:28:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3417. [2021-06-05 07:28:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-06-05 07:28:54,774 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-06-05 07:28:54,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:54,774 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-06-05 07:28:54,774 INFO L483 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) [2021-06-05 07:28:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-06-05 07:28:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:54,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:54,778 INFO L521 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] [2021-06-05 07:28:54,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-05 07:28:54,993 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:54,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1005538624, now seen corresponding path program 11 times [2021-06-05 07:28:54,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:54,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336828623] [2021-06-05 07:28:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:55,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:55,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336828623] [2021-06-05 07:28:55,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336828623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:55,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536251081] [2021-06-05 07:28:55,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:55,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:28:55,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:55,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:55,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:55,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536251081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:55,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:55,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:28:55,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379273401] [2021-06-05 07:28:55,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:28:55,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:55,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:28:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:28:55,269 INFO L87 Difference]: Start difference. First operand 3417 states and 9458 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) [2021-06-05 07:28:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:55,403 INFO L93 Difference]: Finished difference Result 4779 states and 12701 transitions. [2021-06-05 07:28:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 07:28:55,403 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 [2021-06-05 07:28:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:55,408 INFO L225 Difference]: With dead ends: 4779 [2021-06-05 07:28:55,408 INFO L226 Difference]: Without dead ends: 4627 [2021-06-05 07:28:55,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:28:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-06-05 07:28:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3492. [2021-06-05 07:28:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 2.75651675737611) internal successors, (9623), 3491 states have internal predecessors, (9623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 9623 transitions. [2021-06-05 07:28:55,450 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 9623 transitions. Word has length 57 [2021-06-05 07:28:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:55,451 INFO L482 AbstractCegarLoop]: Abstraction has 3492 states and 9623 transitions. [2021-06-05 07:28:55,451 INFO L483 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) [2021-06-05 07:28:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 9623 transitions. [2021-06-05 07:28:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:55,454 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:55,454 INFO L521 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] [2021-06-05 07:28:55,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-05 07:28:55,669 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:55,669 INFO L82 PathProgramCache]: Analyzing trace with hash 845130068, now seen corresponding path program 12 times [2021-06-05 07:28:55,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:55,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556358294] [2021-06-05 07:28:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:55,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:55,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556358294] [2021-06-05 07:28:55,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556358294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:55,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918709209] [2021-06-05 07:28:55,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:55,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:28:55,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:55,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:55,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:55,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918709209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:55,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:55,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:28:55,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344834102] [2021-06-05 07:28:55,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:28:55,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:28:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:28:55,988 INFO L87 Difference]: Start difference. First operand 3492 states and 9623 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) [2021-06-05 07:28:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:56,181 INFO L93 Difference]: Finished difference Result 4955 states and 13053 transitions. [2021-06-05 07:28:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:28:56,181 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 [2021-06-05 07:28:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:56,186 INFO L225 Difference]: With dead ends: 4955 [2021-06-05 07:28:56,186 INFO L226 Difference]: Without dead ends: 4803 [2021-06-05 07:28:56,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 218.8ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:28:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2021-06-05 07:28:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 3492. [2021-06-05 07:28:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 2.75651675737611) internal successors, (9623), 3491 states have internal predecessors, (9623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 9623 transitions. [2021-06-05 07:28:56,226 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 9623 transitions. Word has length 57 [2021-06-05 07:28:56,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:56,226 INFO L482 AbstractCegarLoop]: Abstraction has 3492 states and 9623 transitions. [2021-06-05 07:28:56,226 INFO L483 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) [2021-06-05 07:28:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 9623 transitions. [2021-06-05 07:28:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:56,229 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:56,229 INFO L521 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] [2021-06-05 07:28:56,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-05 07:28:56,445 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1016003256, now seen corresponding path program 6 times [2021-06-05 07:28:56,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:56,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429443760] [2021-06-05 07:28:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:56,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:56,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429443760] [2021-06-05 07:28:56,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429443760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:56,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375878313] [2021-06-05 07:28:56,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:56,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 07:28:56,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:56,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:56,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:56,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375878313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:56,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:56,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:28:56,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059985973] [2021-06-05 07:28:56,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:28:56,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:56,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:28:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:28:56,727 INFO L87 Difference]: Start difference. First operand 3492 states and 9623 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) [2021-06-05 07:28:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:57,012 INFO L93 Difference]: Finished difference Result 5339 states and 13949 transitions. [2021-06-05 07:28:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:28:57,012 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 [2021-06-05 07:28:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:57,017 INFO L225 Difference]: With dead ends: 5339 [2021-06-05 07:28:57,017 INFO L226 Difference]: Without dead ends: 4947 [2021-06-05 07:28:57,018 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 265.0ms TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:28:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2021-06-05 07:28:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 3582. [2021-06-05 07:28:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 2.7402960067020383) internal successors, (9813), 3581 states have internal predecessors, (9813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 9813 transitions. [2021-06-05 07:28:57,078 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 9813 transitions. Word has length 57 [2021-06-05 07:28:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:57,078 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 9813 transitions. [2021-06-05 07:28:57,078 INFO L483 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) [2021-06-05 07:28:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 9813 transitions. [2021-06-05 07:28:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:57,081 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:57,082 INFO L521 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] [2021-06-05 07:28:57,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-05 07:28:57,282 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:57,283 INFO L82 PathProgramCache]: Analyzing trace with hash -542675038, now seen corresponding path program 7 times [2021-06-05 07:28:57,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:57,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649804371] [2021-06-05 07:28:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:57,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:57,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649804371] [2021-06-05 07:28:57,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649804371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:57,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841244830] [2021-06-05 07:28:57,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:57,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:57,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:57,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841244830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:57,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:57,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:28:57,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537685396] [2021-06-05 07:28:57,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:28:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:28:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:28:57,613 INFO L87 Difference]: Start difference. First operand 3582 states and 9813 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) [2021-06-05 07:28:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:57,847 INFO L93 Difference]: Finished difference Result 4949 states and 13043 transitions. [2021-06-05 07:28:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:28:57,847 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 [2021-06-05 07:28:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:57,852 INFO L225 Difference]: With dead ends: 4949 [2021-06-05 07:28:57,852 INFO L226 Difference]: Without dead ends: 4797 [2021-06-05 07:28:57,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 258.4ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:28:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2021-06-05 07:28:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 3547. [2021-06-05 07:28:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 3546 states have (on average 2.745628877608573) internal successors, (9736), 3546 states have internal predecessors, (9736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 9736 transitions. [2021-06-05 07:28:57,893 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 9736 transitions. Word has length 57 [2021-06-05 07:28:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:57,893 INFO L482 AbstractCegarLoop]: Abstraction has 3547 states and 9736 transitions. [2021-06-05 07:28:57,893 INFO L483 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) [2021-06-05 07:28:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 9736 transitions. [2021-06-05 07:28:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:57,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:57,896 INFO L521 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] [2021-06-05 07:28:58,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:58,108 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash 509542868, now seen corresponding path program 8 times [2021-06-05 07:28:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:58,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558042644] [2021-06-05 07:28:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:58,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:58,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558042644] [2021-06-05 07:28:58,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558042644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:58,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959885030] [2021-06-05 07:28:58,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:58,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:58,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:58,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:58,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:58,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959885030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:58,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:58,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:28:58,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616045340] [2021-06-05 07:28:58,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:28:58,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:58,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:28:58,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:28:58,409 INFO L87 Difference]: Start difference. First operand 3547 states and 9736 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) [2021-06-05 07:28:58,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:58,654 INFO L93 Difference]: Finished difference Result 5131 states and 13405 transitions. [2021-06-05 07:28:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:28:58,654 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 [2021-06-05 07:28:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:58,659 INFO L225 Difference]: With dead ends: 5131 [2021-06-05 07:28:58,659 INFO L226 Difference]: Without dead ends: 4979 [2021-06-05 07:28:58,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 267.3ms TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:28:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-06-05 07:28:58,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3652. [2021-06-05 07:28:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 2.7299370035606683) internal successors, (9967), 3651 states have internal predecessors, (9967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 9967 transitions. [2021-06-05 07:28:58,704 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 9967 transitions. Word has length 57 [2021-06-05 07:28:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:58,704 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 9967 transitions. [2021-06-05 07:28:58,704 INFO L483 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) [2021-06-05 07:28:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 9967 transitions. [2021-06-05 07:28:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:58,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:58,707 INFO L521 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] [2021-06-05 07:28:58,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-06-05 07:28:58,923 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:58,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:58,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1535792180, now seen corresponding path program 9 times [2021-06-05 07:28:58,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:58,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847017915] [2021-06-05 07:28:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:59,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:59,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847017915] [2021-06-05 07:28:59,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847017915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:59,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887446660] [2021-06-05 07:28:59,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:59,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:28:59,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:59,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:59,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887446660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:59,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:59,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:28:59,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574772598] [2021-06-05 07:28:59,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:28:59,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:59,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:28:59,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:28:59,229 INFO L87 Difference]: Start difference. First operand 3652 states and 9967 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) [2021-06-05 07:28:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:59,561 INFO L93 Difference]: Finished difference Result 5235 states and 13613 transitions. [2021-06-05 07:28:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:28:59,561 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 [2021-06-05 07:28:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:59,566 INFO L225 Difference]: With dead ends: 5235 [2021-06-05 07:28:59,567 INFO L226 Difference]: Without dead ends: 5083 [2021-06-05 07:28:59,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 312.9ms TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:28:59,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2021-06-05 07:28:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 3636. [2021-06-05 07:28:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 2.730123796423659) internal successors, (9924), 3635 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 9924 transitions. [2021-06-05 07:28:59,606 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 9924 transitions. Word has length 57 [2021-06-05 07:28:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:59,606 INFO L482 AbstractCegarLoop]: Abstraction has 3636 states and 9924 transitions. [2021-06-05 07:28:59,607 INFO L483 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) [2021-06-05 07:28:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 9924 transitions. [2021-06-05 07:28:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:59,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:59,610 INFO L521 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] [2021-06-05 07:28:59,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-05 07:28:59,810 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:59,811 INFO L82 PathProgramCache]: Analyzing trace with hash -723248218, now seen corresponding path program 10 times [2021-06-05 07:28:59,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:59,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627148420] [2021-06-05 07:28:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:59,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:59,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627148420] [2021-06-05 07:28:59,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627148420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:59,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073419033] [2021-06-05 07:28:59,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:59,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:59,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:59,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:59,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:00,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073419033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:00,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:00,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:00,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872865199] [2021-06-05 07:29:00,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:00,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:00,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:00,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:00,106 INFO L87 Difference]: Start difference. First operand 3636 states and 9924 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) [2021-06-05 07:29:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:00,409 INFO L93 Difference]: Finished difference Result 5219 states and 13581 transitions. [2021-06-05 07:29:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:29:00,409 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 [2021-06-05 07:29:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:00,414 INFO L225 Difference]: With dead ends: 5219 [2021-06-05 07:29:00,414 INFO L226 Difference]: Without dead ends: 5067 [2021-06-05 07:29:00,414 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 303.6ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:29:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2021-06-05 07:29:00,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 3581. [2021-06-05 07:29:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 2.7391061452513967) internal successors, (9806), 3580 states have internal predecessors, (9806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9806 transitions. [2021-06-05 07:29:00,452 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9806 transitions. Word has length 57 [2021-06-05 07:29:00,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:00,452 INFO L482 AbstractCegarLoop]: Abstraction has 3581 states and 9806 transitions. [2021-06-05 07:29:00,452 INFO L483 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) [2021-06-05 07:29:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9806 transitions. [2021-06-05 07:29:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:00,455 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:00,455 INFO L521 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] [2021-06-05 07:29:00,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:00,656 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash 891212980, now seen corresponding path program 13 times [2021-06-05 07:29:00,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:00,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917754809] [2021-06-05 07:29:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:00,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:00,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917754809] [2021-06-05 07:29:00,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917754809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:00,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968397187] [2021-06-05 07:29:00,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:00,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:00,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:00,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968397187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:00,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:00,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:00,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094694766] [2021-06-05 07:29:00,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:00,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:00,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:00,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:00,946 INFO L87 Difference]: Start difference. First operand 3581 states and 9806 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) [2021-06-05 07:29:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:01,105 INFO L93 Difference]: Finished difference Result 5043 states and 13229 transitions. [2021-06-05 07:29:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:29:01,105 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 [2021-06-05 07:29:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:01,110 INFO L225 Difference]: With dead ends: 5043 [2021-06-05 07:29:01,110 INFO L226 Difference]: Without dead ends: 4891 [2021-06-05 07:29:01,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 198.8ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:29:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2021-06-05 07:29:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 3556. [2021-06-05 07:29:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.742897327707454) internal successors, (9751), 3555 states have internal predecessors, (9751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9751 transitions. [2021-06-05 07:29:01,147 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9751 transitions. Word has length 57 [2021-06-05 07:29:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:01,147 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 9751 transitions. [2021-06-05 07:29:01,147 INFO L483 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) [2021-06-05 07:29:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9751 transitions. [2021-06-05 07:29:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:01,150 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:01,150 INFO L521 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] [2021-06-05 07:29:01,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-05 07:29:01,351 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:01,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1553085624, now seen corresponding path program 14 times [2021-06-05 07:29:01,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:01,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142916439] [2021-06-05 07:29:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:01,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:01,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142916439] [2021-06-05 07:29:01,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142916439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:01,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959978003] [2021-06-05 07:29:01,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:01,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:01,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:01,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:01,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:01,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959978003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:01,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:01,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:01,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801702] [2021-06-05 07:29:01,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:01,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:01,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:01,626 INFO L87 Difference]: Start difference. First operand 3556 states and 9751 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) [2021-06-05 07:29:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:01,835 INFO L93 Difference]: Finished difference Result 5339 states and 13821 transitions. [2021-06-05 07:29:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:29:01,836 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 [2021-06-05 07:29:01,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:01,840 INFO L225 Difference]: With dead ends: 5339 [2021-06-05 07:29:01,841 INFO L226 Difference]: Without dead ends: 5187 [2021-06-05 07:29:01,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 216.5ms TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:29:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2021-06-05 07:29:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 3606. [2021-06-05 07:29:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 2.735367545076283) internal successors, (9861), 3605 states have internal predecessors, (9861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 9861 transitions. [2021-06-05 07:29:01,878 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 9861 transitions. Word has length 57 [2021-06-05 07:29:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:01,878 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 9861 transitions. [2021-06-05 07:29:01,878 INFO L483 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) [2021-06-05 07:29:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 9861 transitions. [2021-06-05 07:29:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:01,881 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:01,881 INFO L521 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] [2021-06-05 07:29:02,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:02,094 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:02,094 INFO L82 PathProgramCache]: Analyzing trace with hash 880748348, now seen corresponding path program 11 times [2021-06-05 07:29:02,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:02,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865981723] [2021-06-05 07:29:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:02,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:02,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865981723] [2021-06-05 07:29:02,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865981723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:02,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042373915] [2021-06-05 07:29:02,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:02,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:29:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:02,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:02,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:02,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042373915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:02,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:02,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:02,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795851135] [2021-06-05 07:29:02,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:02,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:02,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:02,370 INFO L87 Difference]: Start difference. First operand 3606 states and 9861 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) [2021-06-05 07:29:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:02,692 INFO L93 Difference]: Finished difference Result 5859 states and 14989 transitions. [2021-06-05 07:29:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:29:02,692 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 [2021-06-05 07:29:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:02,697 INFO L225 Difference]: With dead ends: 5859 [2021-06-05 07:29:02,697 INFO L226 Difference]: Without dead ends: 5467 [2021-06-05 07:29:02,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 314.6ms TimeCoverageRelationStatistics Valid=298, Invalid=962, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:29:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2021-06-05 07:29:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 3631. [2021-06-05 07:29:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3630 states have (on average 2.73168044077135) internal successors, (9916), 3630 states have internal predecessors, (9916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 9916 transitions. [2021-06-05 07:29:02,735 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 9916 transitions. Word has length 57 [2021-06-05 07:29:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:02,736 INFO L482 AbstractCegarLoop]: Abstraction has 3631 states and 9916 transitions. [2021-06-05 07:29:02,736 INFO L483 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) [2021-06-05 07:29:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 9916 transitions. [2021-06-05 07:29:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:02,738 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:02,738 INFO L521 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] [2021-06-05 07:29:02,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 07:29:02,953 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:02,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1354076566, now seen corresponding path program 12 times [2021-06-05 07:29:02,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:02,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075405472] [2021-06-05 07:29:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:03,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:03,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075405472] [2021-06-05 07:29:03,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075405472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:03,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250222640] [2021-06-05 07:29:03,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:03,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:29:03,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:03,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:03,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:03,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250222640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:03,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:03,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:03,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144672365] [2021-06-05 07:29:03,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:03,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:03,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:03,246 INFO L87 Difference]: Start difference. First operand 3631 states and 9916 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) [2021-06-05 07:29:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:03,494 INFO L93 Difference]: Finished difference Result 5219 states and 13581 transitions. [2021-06-05 07:29:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:29:03,494 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 [2021-06-05 07:29:03,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:03,499 INFO L225 Difference]: With dead ends: 5219 [2021-06-05 07:29:03,499 INFO L226 Difference]: Without dead ends: 5067 [2021-06-05 07:29:03,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 255.3ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:29:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2021-06-05 07:29:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 3556. [2021-06-05 07:29:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.742897327707454) internal successors, (9751), 3555 states have internal predecessors, (9751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9751 transitions. [2021-06-05 07:29:03,535 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9751 transitions. Word has length 57 [2021-06-05 07:29:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:03,535 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 9751 transitions. [2021-06-05 07:29:03,535 INFO L483 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) [2021-06-05 07:29:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9751 transitions. [2021-06-05 07:29:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:03,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:03,538 INFO L521 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] [2021-06-05 07:29:03,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 07:29:03,739 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:03,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549134, now seen corresponding path program 15 times [2021-06-05 07:29:03,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:03,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674964336] [2021-06-05 07:29:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:03,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:03,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674964336] [2021-06-05 07:29:03,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674964336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:03,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118093357] [2021-06-05 07:29:03,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:03,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 07:29:03,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:03,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:03,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:03,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118093357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:03,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:03,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:03,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736868128] [2021-06-05 07:29:03,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:03,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:03,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:03,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:03,987 INFO L87 Difference]: Start difference. First operand 3556 states and 9751 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) [2021-06-05 07:29:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:04,150 INFO L93 Difference]: Finished difference Result 5128 states and 13414 transitions. [2021-06-05 07:29:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:29:04,150 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 [2021-06-05 07:29:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:04,155 INFO L225 Difference]: With dead ends: 5128 [2021-06-05 07:29:04,155 INFO L226 Difference]: Without dead ends: 4976 [2021-06-05 07:29:04,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-06-05 07:29:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2021-06-05 07:29:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 3531. [2021-06-05 07:29:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 2.746742209631728) internal successors, (9696), 3530 states have internal predecessors, (9696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 9696 transitions. [2021-06-05 07:29:04,209 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 9696 transitions. Word has length 57 [2021-06-05 07:29:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:04,209 INFO L482 AbstractCegarLoop]: Abstraction has 3531 states and 9696 transitions. [2021-06-05 07:29:04,209 INFO L483 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) [2021-06-05 07:29:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 9696 transitions. [2021-06-05 07:29:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:04,211 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:04,211 INFO L521 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] [2021-06-05 07:29:04,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-06-05 07:29:04,412 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:04,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1415749470, now seen corresponding path program 16 times [2021-06-05 07:29:04,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:04,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374031659] [2021-06-05 07:29:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:04,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:04,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374031659] [2021-06-05 07:29:04,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374031659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:04,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991179631] [2021-06-05 07:29:04,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:04,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:29:04,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:04,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:04,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:04,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991179631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:04,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:04,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543490112] [2021-06-05 07:29:04,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:04,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:04,675 INFO L87 Difference]: Start difference. First operand 3531 states and 9696 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) [2021-06-05 07:29:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:04,924 INFO L93 Difference]: Finished difference Result 5384 states and 13926 transitions. [2021-06-05 07:29:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:29:04,925 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 [2021-06-05 07:29:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:04,930 INFO L225 Difference]: With dead ends: 5384 [2021-06-05 07:29:04,930 INFO L226 Difference]: Without dead ends: 5232 [2021-06-05 07:29:04,930 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 243.7ms TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:29:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5232 states. [2021-06-05 07:29:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5232 to 3556. [2021-06-05 07:29:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.742897327707454) internal successors, (9751), 3555 states have internal predecessors, (9751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9751 transitions. [2021-06-05 07:29:04,972 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9751 transitions. Word has length 57 [2021-06-05 07:29:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:04,973 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 9751 transitions. [2021-06-05 07:29:04,973 INFO L483 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) [2021-06-05 07:29:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9751 transitions. [2021-06-05 07:29:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:04,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:04,976 INFO L521 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] [2021-06-05 07:29:05,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:05,192 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash 955868276, now seen corresponding path program 17 times [2021-06-05 07:29:05,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:05,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595829745] [2021-06-05 07:29:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:05,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:05,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595829745] [2021-06-05 07:29:05,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595829745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:05,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711773672] [2021-06-05 07:29:05,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:05,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:29:05,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:05,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:05,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:05,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711773672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:05,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:05,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:05,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760877213] [2021-06-05 07:29:05,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:05,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:05,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:05,454 INFO L87 Difference]: Start difference. First operand 3556 states and 9751 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) [2021-06-05 07:29:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:05,634 INFO L93 Difference]: Finished difference Result 5113 states and 13389 transitions. [2021-06-05 07:29:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:29:05,635 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 [2021-06-05 07:29:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:05,639 INFO L225 Difference]: With dead ends: 5113 [2021-06-05 07:29:05,639 INFO L226 Difference]: Without dead ends: 4961 [2021-06-05 07:29:05,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 196.6ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:29:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2021-06-05 07:29:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 3531. [2021-06-05 07:29:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 2.746742209631728) internal successors, (9696), 3530 states have internal predecessors, (9696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 9696 transitions. [2021-06-05 07:29:05,679 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 9696 transitions. Word has length 57 [2021-06-05 07:29:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:05,680 INFO L482 AbstractCegarLoop]: Abstraction has 3531 states and 9696 transitions. [2021-06-05 07:29:05,680 INFO L483 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) [2021-06-05 07:29:05,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 9696 transitions. [2021-06-05 07:29:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:05,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:05,682 INFO L521 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] [2021-06-05 07:29:05,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-05 07:29:05,883 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:05,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:05,883 INFO L82 PathProgramCache]: Analyzing trace with hash -884485368, now seen corresponding path program 18 times [2021-06-05 07:29:05,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:05,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138996502] [2021-06-05 07:29:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:05,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:05,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138996502] [2021-06-05 07:29:05,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138996502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:05,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026720917] [2021-06-05 07:29:05,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:05,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:29:06,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:29:06,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:06,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026720917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:06,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:06,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:06,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467895380] [2021-06-05 07:29:06,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:06,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:06,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:06,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:06,486 INFO L87 Difference]: Start difference. First operand 3531 states and 9696 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) [2021-06-05 07:29:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:07,008 INFO L93 Difference]: Finished difference Result 7762 states and 20463 transitions. [2021-06-05 07:29:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:29:07,008 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 [2021-06-05 07:29:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:07,016 INFO L225 Difference]: With dead ends: 7762 [2021-06-05 07:29:07,016 INFO L226 Difference]: Without dead ends: 7052 [2021-06-05 07:29:07,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 668.6ms TimeCoverageRelationStatistics Valid=424, Invalid=1468, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:29:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7052 states. [2021-06-05 07:29:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7052 to 3809. [2021-06-05 07:29:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3809 states, 3808 states have (on average 2.7547268907563027) internal successors, (10490), 3808 states have internal predecessors, (10490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 10490 transitions. [2021-06-05 07:29:07,065 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 10490 transitions. Word has length 57 [2021-06-05 07:29:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:07,065 INFO L482 AbstractCegarLoop]: Abstraction has 3809 states and 10490 transitions. [2021-06-05 07:29:07,066 INFO L483 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) [2021-06-05 07:29:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 10490 transitions. [2021-06-05 07:29:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:07,068 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:07,069 INFO L521 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] [2021-06-05 07:29:07,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:07,270 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:07,271 INFO L82 PathProgramCache]: Analyzing trace with hash 613988712, now seen corresponding path program 13 times [2021-06-05 07:29:07,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:07,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594008046] [2021-06-05 07:29:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:07,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:07,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594008046] [2021-06-05 07:29:07,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594008046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:07,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311792747] [2021-06-05 07:29:07,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:07,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:07,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:07,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311792747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:07,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:07,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:07,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688343025] [2021-06-05 07:29:07,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:07,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:07,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:07,558 INFO L87 Difference]: Start difference. First operand 3809 states and 10490 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) [2021-06-05 07:29:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:07,845 INFO L93 Difference]: Finished difference Result 5498 states and 14449 transitions. [2021-06-05 07:29:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:29:07,846 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 [2021-06-05 07:29:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:07,850 INFO L225 Difference]: With dead ends: 5498 [2021-06-05 07:29:07,850 INFO L226 Difference]: Without dead ends: 5346 [2021-06-05 07:29:07,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 284.3ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:29:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2021-06-05 07:29:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 3884. [2021-06-05 07:29:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 2.7671903167653875) internal successors, (10745), 3883 states have internal predecessors, (10745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 10745 transitions. [2021-06-05 07:29:07,907 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 10745 transitions. Word has length 57 [2021-06-05 07:29:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:07,907 INFO L482 AbstractCegarLoop]: Abstraction has 3884 states and 10745 transitions. [2021-06-05 07:29:07,907 INFO L483 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) [2021-06-05 07:29:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 10745 transitions. [2021-06-05 07:29:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:07,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:07,910 INFO L521 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] [2021-06-05 07:29:08,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:08,111 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:08,111 INFO L82 PathProgramCache]: Analyzing trace with hash -48566186, now seen corresponding path program 14 times [2021-06-05 07:29:08,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:08,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231539618] [2021-06-05 07:29:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:08,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:08,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231539618] [2021-06-05 07:29:08,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231539618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:08,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822415961] [2021-06-05 07:29:08,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:08,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:08,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:08,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:08,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-06-05 07:43:19,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-06-05 07:43:19,113 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 07:43:19,114 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 07:43:19,119 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 07:43:19,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:43:19 BasicIcfg [2021-06-05 07:43:19,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 07:43:19,119 INFO L168 Benchmark]: Toolchain (without parser) took 879597.58 ms. Allocated memory was 333.4 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 296.0 MB in the beginning and 890.6 MB in the end (delta: -594.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 333.4 MB. Free memory was 313.9 MB in the beginning and 313.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.42 ms. Allocated memory is still 333.4 MB. Free memory was 295.7 MB in the beginning and 295.7 MB in the end (delta: 71.9 kB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.28 ms. Allocated memory is still 333.4 MB. Free memory was 295.7 MB in the beginning and 293.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 ms. Allocated memory is still 333.4 MB. Free memory was 293.7 MB in the beginning and 292.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L168 Benchmark]: RCFGBuilder took 290.15 ms. Allocated memory is still 333.4 MB. Free memory was 292.5 MB in the beginning and 271.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L168 Benchmark]: TraceAbstraction took 878861.70 ms. Allocated memory was 333.4 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 270.7 MB in the beginning and 890.6 MB in the end (delta: -620.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.0 GB. [2021-06-05 07:43:19,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 333.4 MB. Free memory was 313.9 MB in the beginning and 313.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 372.42 ms. Allocated memory is still 333.4 MB. Free memory was 295.7 MB in the beginning and 295.7 MB in the end (delta: 71.9 kB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.28 ms. Allocated memory is still 333.4 MB. Free memory was 295.7 MB in the beginning and 293.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.11 ms. Allocated memory is still 333.4 MB. Free memory was 293.7 MB in the beginning and 292.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 290.15 ms. Allocated memory is still 333.4 MB. Free memory was 292.5 MB in the beginning and 271.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 878861.70 ms. Allocated memory was 333.4 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 270.7 MB in the beginning and 890.6 MB in the end (delta: -620.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - 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 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 878769.8ms, OverallIterations: 39, TraceHistogramMax: 4, EmptinessCheckTime: 132.4ms, AutomataDifference: 9344.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 98.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3553 SDtfs, 19238 SDslu, 28079 SDs, 0 SdLazy, 4777 SolverSat, 1269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2321.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2466 GetRequests, 1481 SyntacticMatches, 8 SemanticMatches, 977 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8020 ImplicationChecksByTransitivity, 8817.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3884occurred in iteration=38, InterpolantAutomatonStates: 821, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1662.0ms AutomataMinimizationTime, 38 MinimizatonAttempts, 51245 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 299.9ms SsaConstructionTime, 693.6ms SatisfiabilityAnalysisTime, 7647.8ms InterpolantComputationTime, 3593 NumberOfCodeBlocks, 3593 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 3524 ConstructedInterpolants, 0 QuantifiedInterpolants, 26046 SizeOfPredicates, 62 NumberOfNonLiveVariables, 4172 ConjunctsInSsa, 352 ConjunctsInUnsatCore, 69 InterpolantComputations, 7 PerfectInterpolantSequences, 0/648 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