/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 16:19:08,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 16:19:08,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 16:19:08,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 16:19:08,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 16:19:08,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 16:19:08,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 16:19:08,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 16:19:08,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 16:19:08,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 16:19:08,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 16:19:08,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-01 16:19:08,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 16:19:08,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 16:19:08,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 16:19:08,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 16:19:08,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 16:19:08,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 16:19:08,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 16:19:08,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 16:19:08,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 16:19:08,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 16:19:08,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 16:19:08,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 16:19:08,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-01 16:19:08,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-01 16:19:08,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-01 16:19:08,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-01 16:19:08,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-01 16:19:08,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-01 16:19:08,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-01 16:19:08,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-01 16:19:08,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-01 16:19:08,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-01 16:19:08,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-01 16:19:08,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-01 16:19:08,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-01 16:19:08,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-01 16:19:08,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 16:19:08,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 16:19:08,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 16:19:08,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 16:19:08,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 16:19:08,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 16:19:08,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 16:19:08,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 16:19:08,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 16:19:08,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 16:19:08,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 16:19:08,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 16:19:08,292 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 16:19:08,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 16:19:08,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 16:19:08,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:19:08,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 16:19:08,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 16:19:08,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 16:19:08,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 16:19:08,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 16:19:08,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 16:19:08,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 16:19:08,473 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 16:19:08,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-03-01 16:19:08,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d570d8bdf/3a75ecc5c3714e1f89f9082332c1e550/FLAG15bde9583 [2022-03-01 16:19:08,890 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 16:19:08,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-03-01 16:19:08,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d570d8bdf/3a75ecc5c3714e1f89f9082332c1e550/FLAG15bde9583 [2022-03-01 16:19:08,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d570d8bdf/3a75ecc5c3714e1f89f9082332c1e550 [2022-03-01 16:19:08,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 16:19:08,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 16:19:08,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 16:19:08,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 16:19:08,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 16:19:08,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:19:08" (1/1) ... [2022-03-01 16:19:08,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b0a81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:08, skipping insertion in model container [2022-03-01 16:19:08,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:19:08" (1/1) ... [2022-03-01 16:19:08,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 16:19:08,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 16:19:09,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2022-03-01 16:19:09,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:19:09,080 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 16:19:09,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2022-03-01 16:19:09,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:19:09,120 INFO L208 MainTranslator]: Completed translation [2022-03-01 16:19:09,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09 WrapperNode [2022-03-01 16:19:09,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 16:19:09,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 16:19:09,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 16:19:09,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 16:19:09,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,140 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-03-01 16:19:09,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 16:19:09,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 16:19:09,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 16:19:09,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 16:19:09,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 16:19:09,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 16:19:09,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 16:19:09,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 16:19:09,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (1/1) ... [2022-03-01 16:19:09,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:19:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:09,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 16:19:09,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 16:19:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 16:19:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 16:19:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 16:19:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 16:19:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 16:19:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 16:19:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 16:19:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 16:19:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 16:19:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 16:19:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 16:19:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 16:19:09,220 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 16:19:09,295 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 16:19:09,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 16:19:09,414 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 16:19:09,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 16:19:09,420 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 16:19:09,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:19:09 BoogieIcfgContainer [2022-03-01 16:19:09,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 16:19:09,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 16:19:09,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 16:19:09,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 16:19:09,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 04:19:08" (1/3) ... [2022-03-01 16:19:09,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24267665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:19:09, skipping insertion in model container [2022-03-01 16:19:09,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:09" (2/3) ... [2022-03-01 16:19:09,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24267665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:19:09, skipping insertion in model container [2022-03-01 16:19:09,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:19:09" (3/3) ... [2022-03-01 16:19:09,427 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2022-03-01 16:19:09,430 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 16:19:09,430 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 16:19:09,430 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 16:19:09,430 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 16:19:09,453 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,453 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,453 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,454 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,454 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,454 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,454 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,454 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,455 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,455 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,460 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,461 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,461 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:09,465 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 16:19:09,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 16:19:09,504 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 16:19:09,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 16:19:09,514 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-03-01 16:19:09,565 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-01 16:19:09,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:09,581 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:09,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1149725056, now seen corresponding path program 1 times [2022-03-01 16:19:09,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:09,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678353373] [2022-03-01 16:19:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:09,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:09,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678353373] [2022-03-01 16:19:09,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678353373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:09,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:09,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 16:19:09,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172377536] [2022-03-01 16:19:09,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:09,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 16:19:09,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 16:19:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:19:09,779 INFO L87 Difference]: Start difference. First operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 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 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:09,803 INFO L93 Difference]: Finished difference Result 302 states and 708 transitions. [2022-03-01 16:19:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 16:19:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-03-01 16:19:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:09,813 INFO L225 Difference]: With dead ends: 302 [2022-03-01 16:19:09,814 INFO L226 Difference]: Without dead ends: 300 [2022-03-01 16:19:09,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:19:09,820 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:09,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:19:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-03-01 16:19:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-03-01 16:19:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.3612040133779266) internal successors, (706), 299 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 706 transitions. [2022-03-01 16:19:09,866 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 706 transitions. Word has length 59 [2022-03-01 16:19:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:09,867 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 706 transitions. [2022-03-01 16:19:09,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 706 transitions. [2022-03-01 16:19:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-01 16:19:09,870 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:09,870 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:09,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 16:19:09,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1697195594, now seen corresponding path program 1 times [2022-03-01 16:19:09,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:09,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644212493] [2022-03-01 16:19:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:09,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:10,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:10,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644212493] [2022-03-01 16:19:10,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644212493] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:10,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:10,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 16:19:10,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884091479] [2022-03-01 16:19:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:10,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 16:19:10,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 16:19:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-01 16:19:10,085 INFO L87 Difference]: Start difference. First operand 300 states and 706 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:10,219 INFO L93 Difference]: Finished difference Result 504 states and 1216 transitions. [2022-03-01 16:19:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:19:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-03-01 16:19:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:10,227 INFO L225 Difference]: With dead ends: 504 [2022-03-01 16:19:10,228 INFO L226 Difference]: Without dead ends: 453 [2022-03-01 16:19:10,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-01 16:19:10,231 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:10,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 278 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-01 16:19:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 355. [2022-03-01 16:19:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.364406779661017) internal successors, (837), 354 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 837 transitions. [2022-03-01 16:19:10,249 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 837 transitions. Word has length 59 [2022-03-01 16:19:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:10,250 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 837 transitions. [2022-03-01 16:19:10,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 837 transitions. [2022-03-01 16:19:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-01 16:19:10,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:10,253 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:10,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 16:19:10,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash -395182923, now seen corresponding path program 1 times [2022-03-01 16:19:10,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:10,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669526832] [2022-03-01 16:19:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:10,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:10,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:10,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669526832] [2022-03-01 16:19:10,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669526832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:10,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:10,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 16:19:10,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071557698] [2022-03-01 16:19:10,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:10,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:19:10,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:19:10,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:19:10,359 INFO L87 Difference]: Start difference. First operand 355 states and 837 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:10,453 INFO L93 Difference]: Finished difference Result 586 states and 1395 transitions. [2022-03-01 16:19:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:19:10,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-01 16:19:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:10,458 INFO L225 Difference]: With dead ends: 586 [2022-03-01 16:19:10,458 INFO L226 Difference]: Without dead ends: 586 [2022-03-01 16:19:10,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:19:10,465 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 88 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:10,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 247 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-03-01 16:19:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 353. [2022-03-01 16:19:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.428977272727273) internal successors, (855), 352 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 855 transitions. [2022-03-01 16:19:10,493 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 855 transitions. Word has length 63 [2022-03-01 16:19:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:10,493 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 855 transitions. [2022-03-01 16:19:10,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 855 transitions. [2022-03-01 16:19:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-01 16:19:10,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:10,499 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:10,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 16:19:10,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -459418951, now seen corresponding path program 2 times [2022-03-01 16:19:10,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:10,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454329630] [2022-03-01 16:19:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:10,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:10,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454329630] [2022-03-01 16:19:10,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454329630] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:10,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:10,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 16:19:10,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769979093] [2022-03-01 16:19:10,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:10,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:19:10,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:10,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:19:10,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:19:10,626 INFO L87 Difference]: Start difference. First operand 353 states and 855 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:10,709 INFO L93 Difference]: Finished difference Result 460 states and 1098 transitions. [2022-03-01 16:19:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:19:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-01 16:19:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:10,713 INFO L225 Difference]: With dead ends: 460 [2022-03-01 16:19:10,713 INFO L226 Difference]: Without dead ends: 448 [2022-03-01 16:19:10,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:19:10,720 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 90 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:10,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 261 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-01 16:19:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 331. [2022-03-01 16:19:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.390909090909091) internal successors, (789), 330 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 789 transitions. [2022-03-01 16:19:10,732 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 789 transitions. Word has length 63 [2022-03-01 16:19:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 789 transitions. [2022-03-01 16:19:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 789 transitions. [2022-03-01 16:19:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-01 16:19:10,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:10,735 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:10,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 16:19:10,735 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash -88921197, now seen corresponding path program 1 times [2022-03-01 16:19:10,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:10,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718557767] [2022-03-01 16:19:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:10,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:10,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:10,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718557767] [2022-03-01 16:19:10,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718557767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:10,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611910959] [2022-03-01 16:19:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:10,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:10,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:10,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 16:19:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:10,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 16:19:10,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:11,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:11,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611910959] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:11,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 16:19:11,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-03-01 16:19:11,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785427792] [2022-03-01 16:19:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:11,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:19:11,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:19:11,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:19:11,451 INFO L87 Difference]: Start difference. First operand 331 states and 789 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:11,500 INFO L93 Difference]: Finished difference Result 594 states and 1387 transitions. [2022-03-01 16:19:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 16:19:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-01 16:19:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:11,503 INFO L225 Difference]: With dead ends: 594 [2022-03-01 16:19:11,503 INFO L226 Difference]: Without dead ends: 594 [2022-03-01 16:19:11,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:11,503 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 101 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:11,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 199 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:19:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-01 16:19:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 369. [2022-03-01 16:19:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.442934782608696) internal successors, (899), 368 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 899 transitions. [2022-03-01 16:19:11,530 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 899 transitions. Word has length 63 [2022-03-01 16:19:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:11,531 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 899 transitions. [2022-03-01 16:19:11,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 899 transitions. [2022-03-01 16:19:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-01 16:19:11,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:11,532 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:11,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 16:19:11,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:11,748 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1789564179, now seen corresponding path program 2 times [2022-03-01 16:19:11,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:11,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442728336] [2022-03-01 16:19:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:11,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:11,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442728336] [2022-03-01 16:19:11,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442728336] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:11,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:11,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 16:19:11,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038484562] [2022-03-01 16:19:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:11,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:19:11,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:11,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:19:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:19:11,850 INFO L87 Difference]: Start difference. First operand 369 states and 899 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:11,893 INFO L93 Difference]: Finished difference Result 470 states and 1119 transitions. [2022-03-01 16:19:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:19:11,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-01 16:19:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:11,896 INFO L225 Difference]: With dead ends: 470 [2022-03-01 16:19:11,896 INFO L226 Difference]: Without dead ends: 437 [2022-03-01 16:19:11,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:19:11,896 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:11,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 209 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:19:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-01 16:19:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 369. [2022-03-01 16:19:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.4157608695652173) internal successors, (889), 368 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 889 transitions. [2022-03-01 16:19:11,905 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 889 transitions. Word has length 63 [2022-03-01 16:19:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:11,905 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 889 transitions. [2022-03-01 16:19:11,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 889 transitions. [2022-03-01 16:19:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:11,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:11,919 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:11,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 16:19:11,919 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -269043950, now seen corresponding path program 1 times [2022-03-01 16:19:11,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:11,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991262591] [2022-03-01 16:19:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:12,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:12,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991262591] [2022-03-01 16:19:12,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991262591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:12,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839080367] [2022-03-01 16:19:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:12,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:12,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:12,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:12,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 16:19:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:12,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:19:12,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:12,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:12,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839080367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:12,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:12,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-01 16:19:12,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660145082] [2022-03-01 16:19:12,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:12,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 16:19:12,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 16:19:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-03-01 16:19:12,647 INFO L87 Difference]: Start difference. First operand 369 states and 889 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:14,037 INFO L93 Difference]: Finished difference Result 1418 states and 3453 transitions. [2022-03-01 16:19:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 16:19:14,037 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:14,055 INFO L225 Difference]: With dead ends: 1418 [2022-03-01 16:19:14,055 INFO L226 Difference]: Without dead ends: 1367 [2022-03-01 16:19:14,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1023, Invalid=4677, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 16:19:14,057 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 845 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:14,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 2209 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:19:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-03-01 16:19:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 654. [2022-03-01 16:19:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.5068912710566615) internal successors, (1637), 653 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1637 transitions. [2022-03-01 16:19:14,074 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1637 transitions. Word has length 67 [2022-03-01 16:19:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:14,074 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 1637 transitions. [2022-03-01 16:19:14,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1637 transitions. [2022-03-01 16:19:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:14,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:14,076 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:14,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:14,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-01 16:19:14,293 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 671283466, now seen corresponding path program 2 times [2022-03-01 16:19:14,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:14,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399526085] [2022-03-01 16:19:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:14,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:14,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399526085] [2022-03-01 16:19:14,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399526085] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:14,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498917458] [2022-03-01 16:19:14,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:19:14,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:14,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:14,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:14,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 16:19:14,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:14,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:14,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:19:14,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:14,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:14,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498917458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:14,943 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:14,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-01 16:19:14,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894604849] [2022-03-01 16:19:14,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:14,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 16:19:14,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:14,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 16:19:14,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-03-01 16:19:14,944 INFO L87 Difference]: Start difference. First operand 654 states and 1637 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:16,695 INFO L93 Difference]: Finished difference Result 2313 states and 5964 transitions. [2022-03-01 16:19:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 16:19:16,696 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:16,720 INFO L225 Difference]: With dead ends: 2313 [2022-03-01 16:19:16,720 INFO L226 Difference]: Without dead ends: 2262 [2022-03-01 16:19:16,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1036, Invalid=4816, Unknown=0, NotChecked=0, Total=5852 [2022-03-01 16:19:16,722 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 704 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:16,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2115 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:19:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-03-01 16:19:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1030. [2022-03-01 16:19:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 2.7084548104956268) internal successors, (2787), 1029 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 2787 transitions. [2022-03-01 16:19:16,765 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 2787 transitions. Word has length 67 [2022-03-01 16:19:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:16,766 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 2787 transitions. [2022-03-01 16:19:16,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 2787 transitions. [2022-03-01 16:19:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:16,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:16,783 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:16,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:17,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:17,000 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1299249746, now seen corresponding path program 3 times [2022-03-01 16:19:17,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:17,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615157903] [2022-03-01 16:19:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:17,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:17,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615157903] [2022-03-01 16:19:17,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615157903] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:17,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:17,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-01 16:19:17,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569124915] [2022-03-01 16:19:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:17,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:19:17,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:19:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-01 16:19:17,109 INFO L87 Difference]: Start difference. First operand 1030 states and 2787 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:17,329 INFO L93 Difference]: Finished difference Result 1297 states and 3485 transitions. [2022-03-01 16:19:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 16:19:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:17,333 INFO L225 Difference]: With dead ends: 1297 [2022-03-01 16:19:17,333 INFO L226 Difference]: Without dead ends: 1246 [2022-03-01 16:19:17,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:19:17,335 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 116 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:17,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 885 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-03-01 16:19:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1070. [2022-03-01 16:19:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1069 states have (on average 2.7100093545369504) internal successors, (2897), 1069 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 2897 transitions. [2022-03-01 16:19:17,371 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 2897 transitions. Word has length 67 [2022-03-01 16:19:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:17,372 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 2897 transitions. [2022-03-01 16:19:17,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 2897 transitions. [2022-03-01 16:19:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:17,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:17,374 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:17,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 16:19:17,383 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1756265754, now seen corresponding path program 4 times [2022-03-01 16:19:17,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:17,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183033241] [2022-03-01 16:19:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:17,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:17,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183033241] [2022-03-01 16:19:17,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183033241] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:17,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987305833] [2022-03-01 16:19:17,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:19:17,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:17,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:17,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 16:19:17,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:19:17,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:17,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:19:17,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:17,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:18,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987305833] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:18,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:18,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-01 16:19:18,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858163393] [2022-03-01 16:19:18,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:18,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 16:19:18,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 16:19:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-03-01 16:19:18,163 INFO L87 Difference]: Start difference. First operand 1070 states and 2897 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:19,135 INFO L93 Difference]: Finished difference Result 2257 states and 6087 transitions. [2022-03-01 16:19:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:19:19,135 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:19,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:19,143 INFO L225 Difference]: With dead ends: 2257 [2022-03-01 16:19:19,143 INFO L226 Difference]: Without dead ends: 2206 [2022-03-01 16:19:19,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=529, Invalid=2777, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:19:19,145 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 384 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:19,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2167 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:19:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-03-01 16:19:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1294. [2022-03-01 16:19:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 2.7633410672853826) internal successors, (3573), 1293 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3573 transitions. [2022-03-01 16:19:19,176 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3573 transitions. Word has length 67 [2022-03-01 16:19:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:19,176 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 3573 transitions. [2022-03-01 16:19:19,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:19,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3573 transitions. [2022-03-01 16:19:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:19,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:19,179 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:19,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:19,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:19,387 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1118977604, now seen corresponding path program 5 times [2022-03-01 16:19:19,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:19,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038652794] [2022-03-01 16:19:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:19,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:19,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038652794] [2022-03-01 16:19:19,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038652794] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:19,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627010108] [2022-03-01 16:19:19,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:19:19,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:19,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:19,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:19,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 16:19:19,548 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:19,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:19,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:19:19,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:19,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:20,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627010108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:20,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:20,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-01 16:19:20,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189921967] [2022-03-01 16:19:20,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:20,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 16:19:20,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 16:19:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-03-01 16:19:20,042 INFO L87 Difference]: Start difference. First operand 1294 states and 3573 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:20,984 INFO L93 Difference]: Finished difference Result 2405 states and 6522 transitions. [2022-03-01 16:19:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:19:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:20,994 INFO L225 Difference]: With dead ends: 2405 [2022-03-01 16:19:20,994 INFO L226 Difference]: Without dead ends: 2354 [2022-03-01 16:19:20,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=458, Invalid=2298, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:19:20,996 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 427 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:20,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 2123 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:19:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-03-01 16:19:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1598. [2022-03-01 16:19:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 2.8058860363180966) internal successors, (4481), 1597 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 4481 transitions. [2022-03-01 16:19:21,028 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 4481 transitions. Word has length 67 [2022-03-01 16:19:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:21,028 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 4481 transitions. [2022-03-01 16:19:21,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 4481 transitions. [2022-03-01 16:19:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:21,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:21,032 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:21,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-01 16:19:21,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-01 16:19:21,246 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash 611084842, now seen corresponding path program 6 times [2022-03-01 16:19:21,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:21,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492526099] [2022-03-01 16:19:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:21,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:21,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492526099] [2022-03-01 16:19:21,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492526099] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:21,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578915422] [2022-03-01 16:19:21,360 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:19:21,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:21,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:21,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 16:19:21,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:19:21,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:19:21,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:21,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:21,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578915422] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:21,932 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:21,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-01 16:19:21,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685219640] [2022-03-01 16:19:21,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:21,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 16:19:21,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 16:19:21,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-03-01 16:19:21,933 INFO L87 Difference]: Start difference. First operand 1598 states and 4481 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:23,005 INFO L93 Difference]: Finished difference Result 3131 states and 8611 transitions. [2022-03-01 16:19:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:19:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:23,015 INFO L225 Difference]: With dead ends: 3131 [2022-03-01 16:19:23,015 INFO L226 Difference]: Without dead ends: 3080 [2022-03-01 16:19:23,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=908, Invalid=4348, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 16:19:23,017 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 453 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:23,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 2243 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:19:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2022-03-01 16:19:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 1882. [2022-03-01 16:19:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 2.8399787347155767) internal successors, (5342), 1881 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 5342 transitions. [2022-03-01 16:19:23,077 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 5342 transitions. Word has length 67 [2022-03-01 16:19:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:23,077 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 5342 transitions. [2022-03-01 16:19:23,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:23,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 5342 transitions. [2022-03-01 16:19:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:23,080 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:23,081 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:23,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:23,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:23,296 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:23,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1612226274, now seen corresponding path program 7 times [2022-03-01 16:19:23,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:23,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206628328] [2022-03-01 16:19:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:23,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:23,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206628328] [2022-03-01 16:19:23,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206628328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:23,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:23,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-01 16:19:23,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071423182] [2022-03-01 16:19:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:23,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:19:23,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:19:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-01 16:19:23,410 INFO L87 Difference]: Start difference. First operand 1882 states and 5342 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:23,554 INFO L93 Difference]: Finished difference Result 2241 states and 6313 transitions. [2022-03-01 16:19:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 16:19:23,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:23,560 INFO L225 Difference]: With dead ends: 2241 [2022-03-01 16:19:23,561 INFO L226 Difference]: Without dead ends: 2190 [2022-03-01 16:19:23,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:19:23,561 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 105 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:23,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 646 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2022-03-01 16:19:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1942. [2022-03-01 16:19:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.8433797011849564) internal successors, (5519), 1941 states have internal predecessors, (5519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 5519 transitions. [2022-03-01 16:19:23,587 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 5519 transitions. Word has length 67 [2022-03-01 16:19:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:23,587 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 5519 transitions. [2022-03-01 16:19:23,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 5519 transitions. [2022-03-01 16:19:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:23,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:23,591 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:23,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 16:19:23,591 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1734679074, now seen corresponding path program 8 times [2022-03-01 16:19:23,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:23,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879374938] [2022-03-01 16:19:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:23,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:23,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:23,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879374938] [2022-03-01 16:19:23,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879374938] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:23,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625046990] [2022-03-01 16:19:23,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:19:23,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:23,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:23,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:23,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 16:19:23,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:23,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:23,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 16:19:23,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:23,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:24,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625046990] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:24,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:24,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-03-01 16:19:24,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297544334] [2022-03-01 16:19:24,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:24,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:19:24,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:24,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:19:24,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:24,187 INFO L87 Difference]: Start difference. First operand 1942 states and 5519 transitions. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:24,406 INFO L93 Difference]: Finished difference Result 2313 states and 6511 transitions. [2022-03-01 16:19:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 16:19:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:24,420 INFO L225 Difference]: With dead ends: 2313 [2022-03-01 16:19:24,420 INFO L226 Difference]: Without dead ends: 2166 [2022-03-01 16:19:24,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-03-01 16:19:24,421 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 171 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:24,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 904 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-03-01 16:19:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1946. [2022-03-01 16:19:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 2.837017994858612) internal successors, (5518), 1945 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 5518 transitions. [2022-03-01 16:19:24,446 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 5518 transitions. Word has length 67 [2022-03-01 16:19:24,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:24,446 INFO L470 AbstractCegarLoop]: Abstraction has 1946 states and 5518 transitions. [2022-03-01 16:19:24,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:24,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 5518 transitions. [2022-03-01 16:19:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:24,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:24,449 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:24,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:24,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:24,665 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1013282806, now seen corresponding path program 9 times [2022-03-01 16:19:24,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:24,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118483075] [2022-03-01 16:19:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:24,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:24,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:24,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118483075] [2022-03-01 16:19:24,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118483075] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:24,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680337432] [2022-03-01 16:19:24,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:19:24,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:24,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:24,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:24,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 16:19:24,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:19:24,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:24,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 16:19:24,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:25,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:25,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680337432] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:25,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:25,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2022-03-01 16:19:25,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280305775] [2022-03-01 16:19:25,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:25,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:25,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:25,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:25,247 INFO L87 Difference]: Start difference. First operand 1946 states and 5518 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:25,504 INFO L93 Difference]: Finished difference Result 2237 states and 6294 transitions. [2022-03-01 16:19:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 16:19:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:25,509 INFO L225 Difference]: With dead ends: 2237 [2022-03-01 16:19:25,509 INFO L226 Difference]: Without dead ends: 2138 [2022-03-01 16:19:25,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:19:25,510 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 201 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:25,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1179 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2022-03-01 16:19:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1914. [2022-03-01 16:19:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.8384736016727654) internal successors, (5430), 1913 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 5430 transitions. [2022-03-01 16:19:25,535 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 5430 transitions. Word has length 67 [2022-03-01 16:19:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:25,535 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 5430 transitions. [2022-03-01 16:19:25,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 5430 transitions. [2022-03-01 16:19:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 16:19:25,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:25,538 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:25,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:25,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-01 16:19:25,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:25,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1563913122, now seen corresponding path program 10 times [2022-03-01 16:19:25,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:25,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32141791] [2022-03-01 16:19:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:25,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:25,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32141791] [2022-03-01 16:19:25,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32141791] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:25,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341611012] [2022-03-01 16:19:25,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:19:25,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:25,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:25,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:25,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 16:19:25,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:19:25,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:25,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:19:25,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:26,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:26,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341611012] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:26,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:26,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-01 16:19:26,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716845077] [2022-03-01 16:19:26,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:26,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 16:19:26,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 16:19:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-03-01 16:19:26,415 INFO L87 Difference]: Start difference. First operand 1914 states and 5430 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:27,330 INFO L93 Difference]: Finished difference Result 3324 states and 9105 transitions. [2022-03-01 16:19:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:19:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 16:19:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:27,352 INFO L225 Difference]: With dead ends: 3324 [2022-03-01 16:19:27,353 INFO L226 Difference]: Without dead ends: 3273 [2022-03-01 16:19:27,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=647, Invalid=3013, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:19:27,354 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 679 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:27,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 2317 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:19:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-03-01 16:19:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2282. [2022-03-01 16:19:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 2.8540113985094258) internal successors, (6510), 2281 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 6510 transitions. [2022-03-01 16:19:27,396 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 6510 transitions. Word has length 67 [2022-03-01 16:19:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:27,396 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 6510 transitions. [2022-03-01 16:19:27,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 6510 transitions. [2022-03-01 16:19:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:27,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:27,401 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:27,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:27,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-01 16:19:27,619 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1912541999, now seen corresponding path program 11 times [2022-03-01 16:19:27,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:27,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898461026] [2022-03-01 16:19:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:27,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:27,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:27,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898461026] [2022-03-01 16:19:27,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898461026] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:27,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240995888] [2022-03-01 16:19:27,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:19:27,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:27,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:27,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:27,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 16:19:27,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:19:27,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:27,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:27,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:27,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:28,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240995888] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:28,062 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:28,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 16:19:28,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700531528] [2022-03-01 16:19:28,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:28,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:28,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:28,063 INFO L87 Difference]: Start difference. First operand 2282 states and 6510 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:28,317 INFO L93 Difference]: Finished difference Result 3199 states and 8900 transitions. [2022-03-01 16:19:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 16:19:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:28,324 INFO L225 Difference]: With dead ends: 3199 [2022-03-01 16:19:28,324 INFO L226 Difference]: Without dead ends: 3199 [2022-03-01 16:19:28,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:19:28,325 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 323 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:28,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1107 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2022-03-01 16:19:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 2322. [2022-03-01 16:19:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 2.8694528220594573) internal successors, (6660), 2321 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 6660 transitions. [2022-03-01 16:19:28,403 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 6660 transitions. Word has length 71 [2022-03-01 16:19:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:28,404 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 6660 transitions. [2022-03-01 16:19:28,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 6660 transitions. [2022-03-01 16:19:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:28,407 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:28,408 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:28,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:28,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-01 16:19:28,623 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:28,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:28,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1409022455, now seen corresponding path program 12 times [2022-03-01 16:19:28,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:28,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885157864] [2022-03-01 16:19:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:28,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:28,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885157864] [2022-03-01 16:19:28,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885157864] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:28,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039482907] [2022-03-01 16:19:28,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:19:28,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:28,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:28,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:28,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 16:19:28,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:19:28,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:28,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:28,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:29,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:29,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039482907] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:29,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:29,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 16:19:29,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756277511] [2022-03-01 16:19:29,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:29,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:29,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:29,240 INFO L87 Difference]: Start difference. First operand 2322 states and 6660 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:30,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:30,016 INFO L93 Difference]: Finished difference Result 4885 states and 13561 transitions. [2022-03-01 16:19:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:19:30,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:30,026 INFO L225 Difference]: With dead ends: 4885 [2022-03-01 16:19:30,027 INFO L226 Difference]: Without dead ends: 4885 [2022-03-01 16:19:30,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 16:19:30,028 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 732 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:30,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1377 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:30,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2022-03-01 16:19:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 2718. [2022-03-01 16:19:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.896209054103791) internal successors, (7869), 2717 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 7869 transitions. [2022-03-01 16:19:30,082 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 7869 transitions. Word has length 71 [2022-03-01 16:19:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:30,082 INFO L470 AbstractCegarLoop]: Abstraction has 2718 states and 7869 transitions. [2022-03-01 16:19:30,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 7869 transitions. [2022-03-01 16:19:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:30,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:30,086 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:30,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:30,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-01 16:19:30,305 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1047027179, now seen corresponding path program 13 times [2022-03-01 16:19:30,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:30,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318065935] [2022-03-01 16:19:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:30,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:30,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318065935] [2022-03-01 16:19:30,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318065935] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:30,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387347119] [2022-03-01 16:19:30,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:19:30,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:30,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:30,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:30,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 16:19:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:30,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 16:19:30,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:30,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:30,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387347119] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:30,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:30,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 16:19:30,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013313855] [2022-03-01 16:19:30,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:30,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:30,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:30,928 INFO L87 Difference]: Start difference. First operand 2718 states and 7869 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:31,438 INFO L93 Difference]: Finished difference Result 4480 states and 12587 transitions. [2022-03-01 16:19:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:19:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:31,448 INFO L225 Difference]: With dead ends: 4480 [2022-03-01 16:19:31,448 INFO L226 Difference]: Without dead ends: 4432 [2022-03-01 16:19:31,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:19:31,450 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 685 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:31,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 999 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2022-03-01 16:19:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3038. [2022-03-01 16:19:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3037 states have (on average 2.900559762923938) internal successors, (8809), 3037 states have internal predecessors, (8809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 8809 transitions. [2022-03-01 16:19:31,502 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 8809 transitions. Word has length 71 [2022-03-01 16:19:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:31,503 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 8809 transitions. [2022-03-01 16:19:31,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 8809 transitions. [2022-03-01 16:19:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:31,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:31,507 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:31,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:31,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:31,725 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1201955951, now seen corresponding path program 14 times [2022-03-01 16:19:31,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:31,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246299209] [2022-03-01 16:19:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:31,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:31,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246299209] [2022-03-01 16:19:31,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246299209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:31,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095676872] [2022-03-01 16:19:31,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:19:31,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:31,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:31,856 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:31,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 16:19:31,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:31,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:31,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:31,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:32,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:32,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095676872] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:32,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:32,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 16:19:32,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371384647] [2022-03-01 16:19:32,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:32,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:32,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:32,279 INFO L87 Difference]: Start difference. First operand 3038 states and 8809 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:33,024 INFO L93 Difference]: Finished difference Result 5199 states and 14824 transitions. [2022-03-01 16:19:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:19:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:33,033 INFO L225 Difference]: With dead ends: 5199 [2022-03-01 16:19:33,034 INFO L226 Difference]: Without dead ends: 5169 [2022-03-01 16:19:33,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=645, Invalid=2217, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:19:33,035 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 540 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:33,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1437 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:19:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2022-03-01 16:19:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 3684. [2022-03-01 16:19:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.920716806950855) internal successors, (10757), 3683 states have internal predecessors, (10757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10757 transitions. [2022-03-01 16:19:33,093 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10757 transitions. Word has length 71 [2022-03-01 16:19:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:33,093 INFO L470 AbstractCegarLoop]: Abstraction has 3684 states and 10757 transitions. [2022-03-01 16:19:33,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10757 transitions. [2022-03-01 16:19:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:33,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:33,099 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:33,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:33,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-03-01 16:19:33,315 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:33,315 INFO L85 PathProgramCache]: Analyzing trace with hash 952809681, now seen corresponding path program 15 times [2022-03-01 16:19:33,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:33,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427877543] [2022-03-01 16:19:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:33,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:33,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:33,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427877543] [2022-03-01 16:19:33,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427877543] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:33,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888256833] [2022-03-01 16:19:33,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:19:33,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:33,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:33,402 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:33,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 16:19:33,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:19:33,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:33,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:33,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:33,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:33,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888256833] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:33,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:33,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 16:19:33,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588001621] [2022-03-01 16:19:33,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:33,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:33,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:33,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:33,863 INFO L87 Difference]: Start difference. First operand 3684 states and 10757 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:34,600 INFO L93 Difference]: Finished difference Result 6071 states and 17298 transitions. [2022-03-01 16:19:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:19:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-01 16:19:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:34,609 INFO L225 Difference]: With dead ends: 6071 [2022-03-01 16:19:34,609 INFO L226 Difference]: Without dead ends: 5981 [2022-03-01 16:19:34,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:19:34,610 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 533 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:34,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1154 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-03-01 16:19:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3951. [2022-03-01 16:19:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 2.929873417721519) internal successors, (11573), 3950 states have internal predecessors, (11573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 11573 transitions. [2022-03-01 16:19:34,672 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 11573 transitions. Word has length 71 [2022-03-01 16:19:34,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:34,672 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 11573 transitions. [2022-03-01 16:19:34,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 11573 transitions. [2022-03-01 16:19:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:34,677 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:34,677 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:34,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:34,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:34,894 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 305680217, now seen corresponding path program 16 times [2022-03-01 16:19:34,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:34,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971180240] [2022-03-01 16:19:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:34,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:34,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971180240] [2022-03-01 16:19:34,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971180240] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:34,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401228620] [2022-03-01 16:19:34,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:19:34,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:34,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:34,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:35,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 16:19:35,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:19:35,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:35,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:35,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:35,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401228620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:35,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:35,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-03-01 16:19:35,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731993741] [2022-03-01 16:19:35,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:35,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:19:35,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:35,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:19:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:19:35,444 INFO L87 Difference]: Start difference. First operand 3951 states and 11573 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:35,625 INFO L93 Difference]: Finished difference Result 4637 states and 13435 transitions. [2022-03-01 16:19:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 16:19:35,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:35,633 INFO L225 Difference]: With dead ends: 4637 [2022-03-01 16:19:35,634 INFO L226 Difference]: Without dead ends: 4544 [2022-03-01 16:19:35,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-03-01 16:19:35,634 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 246 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:35,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 773 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:35,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-03-01 16:19:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3951. [2022-03-01 16:19:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 2.9263291139240506) internal successors, (11559), 3950 states have internal predecessors, (11559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 11559 transitions. [2022-03-01 16:19:35,716 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 11559 transitions. Word has length 71 [2022-03-01 16:19:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 11559 transitions. [2022-03-01 16:19:35,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 11559 transitions. [2022-03-01 16:19:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:35,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:35,723 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:35,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-01 16:19:35,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:35,956 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 443611529, now seen corresponding path program 17 times [2022-03-01 16:19:35,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:35,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843923040] [2022-03-01 16:19:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:35,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:36,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:36,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843923040] [2022-03-01 16:19:36,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843923040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:36,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808016051] [2022-03-01 16:19:36,037 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:19:36,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:36,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:36,052 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:36,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 16:19:36,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:19:36,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:36,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:36,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:36,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:36,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808016051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:36,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:36,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 16:19:36,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167785338] [2022-03-01 16:19:36,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:36,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:36,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:36,547 INFO L87 Difference]: Start difference. First operand 3951 states and 11559 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:37,239 INFO L93 Difference]: Finished difference Result 5841 states and 16642 transitions. [2022-03-01 16:19:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:19:37,239 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:37,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:37,248 INFO L225 Difference]: With dead ends: 5841 [2022-03-01 16:19:37,248 INFO L226 Difference]: Without dead ends: 5841 [2022-03-01 16:19:37,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=610, Invalid=2696, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:19:37,249 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 604 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:37,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1194 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2022-03-01 16:19:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 4323. [2022-03-01 16:19:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4322 states have (on average 2.93521517815826) internal successors, (12686), 4322 states have internal predecessors, (12686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 12686 transitions. [2022-03-01 16:19:37,354 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 12686 transitions. Word has length 71 [2022-03-01 16:19:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:37,354 INFO L470 AbstractCegarLoop]: Abstraction has 4323 states and 12686 transitions. [2022-03-01 16:19:37,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 12686 transitions. [2022-03-01 16:19:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:37,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:37,361 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:37,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-01 16:19:37,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-01 16:19:37,575 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash -330252237, now seen corresponding path program 18 times [2022-03-01 16:19:37,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:37,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992682602] [2022-03-01 16:19:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:37,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:37,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992682602] [2022-03-01 16:19:37,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992682602] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:37,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679839077] [2022-03-01 16:19:37,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:19:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:37,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:37,631 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:37,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 16:19:37,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:19:37,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:37,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:37,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:37,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:38,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679839077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:38,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:38,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-03-01 16:19:38,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199294562] [2022-03-01 16:19:38,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:38,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:38,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:38,151 INFO L87 Difference]: Start difference. First operand 4323 states and 12686 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:38,885 INFO L93 Difference]: Finished difference Result 6202 states and 17957 transitions. [2022-03-01 16:19:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:19:38,885 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:38,895 INFO L225 Difference]: With dead ends: 6202 [2022-03-01 16:19:38,895 INFO L226 Difference]: Without dead ends: 6166 [2022-03-01 16:19:38,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=720, Invalid=2702, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:19:38,896 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 783 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:38,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1187 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2022-03-01 16:19:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 4571. [2022-03-01 16:19:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4570 states have (on average 2.9330415754923416) internal successors, (13404), 4570 states have internal predecessors, (13404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 13404 transitions. [2022-03-01 16:19:38,961 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 13404 transitions. Word has length 71 [2022-03-01 16:19:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:38,961 INFO L470 AbstractCegarLoop]: Abstraction has 4571 states and 13404 transitions. [2022-03-01 16:19:38,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 13404 transitions. [2022-03-01 16:19:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:38,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:38,967 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:38,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:39,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:39,181 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1918730893, now seen corresponding path program 19 times [2022-03-01 16:19:39,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:39,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597607775] [2022-03-01 16:19:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:39,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:39,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597607775] [2022-03-01 16:19:39,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597607775] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:39,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528072092] [2022-03-01 16:19:39,264 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:19:39,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:39,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:39,265 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:39,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 16:19:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:39,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:39,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:39,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:39,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528072092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:39,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:39,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 16:19:39,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215501951] [2022-03-01 16:19:39,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:39,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:39,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:39,790 INFO L87 Difference]: Start difference. First operand 4571 states and 13404 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:40,543 INFO L93 Difference]: Finished difference Result 6333 states and 18404 transitions. [2022-03-01 16:19:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:19:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:40,552 INFO L225 Difference]: With dead ends: 6333 [2022-03-01 16:19:40,552 INFO L226 Difference]: Without dead ends: 6303 [2022-03-01 16:19:40,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:19:40,553 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:40,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1280 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-03-01 16:19:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 4979. [2022-03-01 16:19:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4978 states have (on average 2.9373242265970267) internal successors, (14622), 4978 states have internal predecessors, (14622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 14622 transitions. [2022-03-01 16:19:40,625 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 14622 transitions. Word has length 71 [2022-03-01 16:19:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:40,625 INFO L470 AbstractCegarLoop]: Abstraction has 4979 states and 14622 transitions. [2022-03-01 16:19:40,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 14622 transitions. [2022-03-01 16:19:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:40,633 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:40,633 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:40,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:40,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:40,838 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1669584623, now seen corresponding path program 20 times [2022-03-01 16:19:40,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:40,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413206457] [2022-03-01 16:19:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:40,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:40,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:40,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413206457] [2022-03-01 16:19:40,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413206457] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:40,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38296725] [2022-03-01 16:19:40,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:19:40,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:40,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:40,910 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:40,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 16:19:40,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:40,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:40,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:40,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:41,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:41,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38296725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:41,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:41,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 16:19:41,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303616768] [2022-03-01 16:19:41,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:41,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:41,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:41,397 INFO L87 Difference]: Start difference. First operand 4979 states and 14622 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:42,104 INFO L93 Difference]: Finished difference Result 7145 states and 20765 transitions. [2022-03-01 16:19:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:19:42,104 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-01 16:19:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:42,117 INFO L225 Difference]: With dead ends: 7145 [2022-03-01 16:19:42,117 INFO L226 Difference]: Without dead ends: 7070 [2022-03-01 16:19:42,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:19:42,119 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 391 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:42,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 1053 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:42,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2022-03-01 16:19:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 5203. [2022-03-01 16:19:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 2.9400230680507495) internal successors, (15294), 5202 states have internal predecessors, (15294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 15294 transitions. [2022-03-01 16:19:42,199 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 15294 transitions. Word has length 71 [2022-03-01 16:19:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:42,199 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 15294 transitions. [2022-03-01 16:19:42,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 15294 transitions. [2022-03-01 16:19:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:42,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:42,207 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:42,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:42,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:42,423 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1262000235, now seen corresponding path program 21 times [2022-03-01 16:19:42,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:42,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049693588] [2022-03-01 16:19:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:42,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:42,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049693588] [2022-03-01 16:19:42,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049693588] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:42,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894059689] [2022-03-01 16:19:42,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:19:42,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:42,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:42,494 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:42,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 16:19:42,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 16:19:42,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:42,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 16:19:42,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:42,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 16:19:42,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894059689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:42,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 16:19:42,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-03-01 16:19:42,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800097641] [2022-03-01 16:19:42,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:42,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:19:42,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:19:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:19:42,740 INFO L87 Difference]: Start difference. First operand 5203 states and 15294 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:42,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:42,839 INFO L93 Difference]: Finished difference Result 5353 states and 15640 transitions. [2022-03-01 16:19:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:42,840 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:42,848 INFO L225 Difference]: With dead ends: 5353 [2022-03-01 16:19:42,848 INFO L226 Difference]: Without dead ends: 5134 [2022-03-01 16:19:42,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:19:42,849 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 150 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:42,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 820 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:19:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2022-03-01 16:19:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 4235. [2022-03-01 16:19:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4234 states have (on average 2.8096362777515353) internal successors, (11896), 4234 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 11896 transitions. [2022-03-01 16:19:42,937 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 11896 transitions. Word has length 71 [2022-03-01 16:19:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:42,937 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 11896 transitions. [2022-03-01 16:19:42,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 11896 transitions. [2022-03-01 16:19:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:42,943 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:42,944 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:42,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:43,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-01 16:19:43,151 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash 986982895, now seen corresponding path program 22 times [2022-03-01 16:19:43,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:43,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576120815] [2022-03-01 16:19:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:43,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:43,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576120815] [2022-03-01 16:19:43,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576120815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:43,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730586435] [2022-03-01 16:19:43,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:19:43,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:43,227 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:43,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 16:19:43,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:19:43,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:43,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 16:19:43,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:43,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:43,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730586435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:43,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:43,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-03-01 16:19:43,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254049636] [2022-03-01 16:19:43,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:43,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:43,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:43,739 INFO L87 Difference]: Start difference. First operand 4235 states and 11896 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:44,055 INFO L93 Difference]: Finished difference Result 5625 states and 15658 transitions. [2022-03-01 16:19:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:19:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-01 16:19:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:44,065 INFO L225 Difference]: With dead ends: 5625 [2022-03-01 16:19:44,065 INFO L226 Difference]: Without dead ends: 5595 [2022-03-01 16:19:44,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:19:44,066 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 331 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:44,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1081 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-03-01 16:19:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 4387. [2022-03-01 16:19:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 2.8075695394436844) internal successors, (12314), 4386 states have internal predecessors, (12314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 12314 transitions. [2022-03-01 16:19:44,160 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 12314 transitions. Word has length 71 [2022-03-01 16:19:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:44,161 INFO L470 AbstractCegarLoop]: Abstraction has 4387 states and 12314 transitions. [2022-03-01 16:19:44,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 12314 transitions. [2022-03-01 16:19:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:44,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:44,169 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:44,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:44,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-01 16:19:44,393 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:44,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2079147621, now seen corresponding path program 23 times [2022-03-01 16:19:44,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:44,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653984741] [2022-03-01 16:19:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:44,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:44,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653984741] [2022-03-01 16:19:44,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653984741] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:44,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932237936] [2022-03-01 16:19:44,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:19:44,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:44,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:44,482 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:44,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 16:19:44,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:44,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:44,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:44,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:44,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:44,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932237936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:44,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:44,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 16:19:44,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432419765] [2022-03-01 16:19:44,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:44,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:44,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:44,991 INFO L87 Difference]: Start difference. First operand 4387 states and 12314 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:45,665 INFO L93 Difference]: Finished difference Result 5675 states and 15793 transitions. [2022-03-01 16:19:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:19:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:45,674 INFO L225 Difference]: With dead ends: 5675 [2022-03-01 16:19:45,675 INFO L226 Difference]: Without dead ends: 5630 [2022-03-01 16:19:45,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=554, Invalid=1896, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:19:45,676 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 509 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:45,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1026 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2022-03-01 16:19:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 4603. [2022-03-01 16:19:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 2.809213385484572) internal successors, (12928), 4602 states have internal predecessors, (12928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 12928 transitions. [2022-03-01 16:19:45,747 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 12928 transitions. Word has length 71 [2022-03-01 16:19:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:45,747 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 12928 transitions. [2022-03-01 16:19:45,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 12928 transitions. [2022-03-01 16:19:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:45,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:45,753 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:45,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:45,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-01 16:19:45,970 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1830001351, now seen corresponding path program 24 times [2022-03-01 16:19:45,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:45,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972501157] [2022-03-01 16:19:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:46,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:46,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972501157] [2022-03-01 16:19:46,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972501157] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:46,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96605035] [2022-03-01 16:19:46,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:19:46,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:46,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:46,038 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:46,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 16:19:46,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:19:46,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:46,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:46,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:46,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96605035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:46,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:46,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 16:19:46,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633358490] [2022-03-01 16:19:46,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:46,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:19:46,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:19:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:46,475 INFO L87 Difference]: Start difference. First operand 4603 states and 12928 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:46,911 INFO L93 Difference]: Finished difference Result 6110 states and 17105 transitions. [2022-03-01 16:19:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 16:19:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:46,921 INFO L225 Difference]: With dead ends: 6110 [2022-03-01 16:19:46,921 INFO L226 Difference]: Without dead ends: 6035 [2022-03-01 16:19:46,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 16:19:46,922 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 294 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:46,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 907 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2022-03-01 16:19:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4815. [2022-03-01 16:19:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4814 states have (on average 2.8066057332779395) internal successors, (13511), 4814 states have internal predecessors, (13511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 13511 transitions. [2022-03-01 16:19:46,996 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 13511 transitions. Word has length 71 [2022-03-01 16:19:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:46,996 INFO L470 AbstractCegarLoop]: Abstraction has 4815 states and 13511 transitions. [2022-03-01 16:19:46,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 13511 transitions. [2022-03-01 16:19:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:47,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:47,003 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:47,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:47,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:47,218 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1147399623, now seen corresponding path program 25 times [2022-03-01 16:19:47,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:47,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84559882] [2022-03-01 16:19:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:47,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:47,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:47,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84559882] [2022-03-01 16:19:47,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84559882] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:47,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800472160] [2022-03-01 16:19:47,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:19:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:47,292 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:47,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 16:19:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:47,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:47,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:47,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:47,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800472160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:47,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:47,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-03-01 16:19:47,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396793807] [2022-03-01 16:19:47,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:47,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:47,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:47,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:47,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:47,800 INFO L87 Difference]: Start difference. First operand 4815 states and 13511 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:48,485 INFO L93 Difference]: Finished difference Result 6706 states and 18678 transitions. [2022-03-01 16:19:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:19:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-01 16:19:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:48,496 INFO L225 Difference]: With dead ends: 6706 [2022-03-01 16:19:48,496 INFO L226 Difference]: Without dead ends: 6661 [2022-03-01 16:19:48,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:19:48,497 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 719 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:48,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1104 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2022-03-01 16:19:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 5051. [2022-03-01 16:19:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5050 states have (on average 2.8047524752475246) internal successors, (14164), 5050 states have internal predecessors, (14164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 14164 transitions. [2022-03-01 16:19:48,572 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 14164 transitions. Word has length 71 [2022-03-01 16:19:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:48,572 INFO L470 AbstractCegarLoop]: Abstraction has 5051 states and 14164 transitions. [2022-03-01 16:19:48,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 14164 transitions. [2022-03-01 16:19:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:48,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:48,578 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:48,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:48,781 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1375488781, now seen corresponding path program 26 times [2022-03-01 16:19:48,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:48,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742568993] [2022-03-01 16:19:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:48,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:48,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742568993] [2022-03-01 16:19:48,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742568993] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:48,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128441061] [2022-03-01 16:19:48,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:19:48,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:48,880 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:48,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 16:19:48,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:19:48,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:48,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:19:48,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:49,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:49,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128441061] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:49,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:49,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 16:19:49,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12368552] [2022-03-01 16:19:49,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:49,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 16:19:49,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:49,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 16:19:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-03-01 16:19:49,264 INFO L87 Difference]: Start difference. First operand 5051 states and 14164 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:49,714 INFO L93 Difference]: Finished difference Result 7248 states and 20072 transitions. [2022-03-01 16:19:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:19:49,714 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:49,725 INFO L225 Difference]: With dead ends: 7248 [2022-03-01 16:19:49,725 INFO L226 Difference]: Without dead ends: 7218 [2022-03-01 16:19:49,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:19:49,726 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 773 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:49,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 944 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:19:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7218 states. [2022-03-01 16:19:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7218 to 5391. [2022-03-01 16:19:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5390 states have (on average 2.811688311688312) internal successors, (15155), 5390 states have internal predecessors, (15155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 15155 transitions. [2022-03-01 16:19:49,809 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 15155 transitions. Word has length 71 [2022-03-01 16:19:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:49,809 INFO L470 AbstractCegarLoop]: Abstraction has 5391 states and 15155 transitions. [2022-03-01 16:19:49,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 15155 transitions. [2022-03-01 16:19:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 16:19:49,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:49,816 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:49,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-01 16:19:50,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-03-01 16:19:50,033 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash -857727561, now seen corresponding path program 27 times [2022-03-01 16:19:50,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:50,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231464483] [2022-03-01 16:19:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:50,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:50,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231464483] [2022-03-01 16:19:50,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231464483] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:50,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150941855] [2022-03-01 16:19:50,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:19:50,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:50,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:50,124 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:50,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 16:19:50,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:19:50,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:50,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 16:19:50,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:50,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:50,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150941855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:50,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:50,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 26 [2022-03-01 16:19:50,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132714739] [2022-03-01 16:19:50,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:50,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 16:19:50,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 16:19:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-03-01 16:19:50,538 INFO L87 Difference]: Start difference. First operand 5391 states and 15155 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:51,450 INFO L93 Difference]: Finished difference Result 9102 states and 25605 transitions. [2022-03-01 16:19:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:19:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 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 71 [2022-03-01 16:19:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:51,466 INFO L225 Difference]: With dead ends: 9102 [2022-03-01 16:19:51,466 INFO L226 Difference]: Without dead ends: 8985 [2022-03-01 16:19:51,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1071, Invalid=4185, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 16:19:51,468 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 451 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:51,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 2025 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:19:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2022-03-01 16:19:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 6059. [2022-03-01 16:19:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6059 states, 6058 states have (on average 2.8081875206338727) internal successors, (17012), 6058 states have internal predecessors, (17012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 17012 transitions. [2022-03-01 16:19:51,599 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 17012 transitions. Word has length 71 [2022-03-01 16:19:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:51,600 INFO L470 AbstractCegarLoop]: Abstraction has 6059 states and 17012 transitions. [2022-03-01 16:19:51,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 17012 transitions. [2022-03-01 16:19:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:19:51,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:51,607 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:51,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:51,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-03-01 16:19:51,824 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash -200147572, now seen corresponding path program 28 times [2022-03-01 16:19:51,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:51,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91753148] [2022-03-01 16:19:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:51,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:19:51,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:51,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91753148] [2022-03-01 16:19:51,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91753148] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:51,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603523150] [2022-03-01 16:19:51,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:19:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:51,910 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:51,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 16:19:51,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:19:51,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:51,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:19:51,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:52,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:52,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603523150] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:52,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:52,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-01 16:19:52,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884491297] [2022-03-01 16:19:52,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:52,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:19:52,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:19:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:19:52,377 INFO L87 Difference]: Start difference. First operand 6059 states and 17012 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:54,481 INFO L93 Difference]: Finished difference Result 9206 states and 25661 transitions. [2022-03-01 16:19:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 16:19:54,482 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-01 16:19:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:54,502 INFO L225 Difference]: With dead ends: 9206 [2022-03-01 16:19:54,502 INFO L226 Difference]: Without dead ends: 9125 [2022-03-01 16:19:54,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2504, Invalid=14266, Unknown=0, NotChecked=0, Total=16770 [2022-03-01 16:19:54,512 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1132 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:54,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3759 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:19:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2022-03-01 16:19:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 4151. [2022-03-01 16:19:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4151 states, 4150 states have (on average 2.7672289156626504) internal successors, (11484), 4150 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4151 states to 4151 states and 11484 transitions. [2022-03-01 16:19:54,601 INFO L78 Accepts]: Start accepts. Automaton has 4151 states and 11484 transitions. Word has length 75 [2022-03-01 16:19:54,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:54,601 INFO L470 AbstractCegarLoop]: Abstraction has 4151 states and 11484 transitions. [2022-03-01 16:19:54,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4151 states and 11484 transitions. [2022-03-01 16:19:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:19:54,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:54,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:54,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:54,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:54,809 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1273828684, now seen corresponding path program 29 times [2022-03-01 16:19:54,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:54,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149943874] [2022-03-01 16:19:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:19:54,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:54,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149943874] [2022-03-01 16:19:54,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149943874] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:54,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362405734] [2022-03-01 16:19:54,904 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:19:54,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:54,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:54,906 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:54,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 16:19:54,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:19:54,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:54,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:19:54,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:55,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:55,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362405734] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:55,659 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:55,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-01 16:19:55,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037892886] [2022-03-01 16:19:55,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:55,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:19:55,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:19:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:19:55,660 INFO L87 Difference]: Start difference. First operand 4151 states and 11484 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:57,791 INFO L93 Difference]: Finished difference Result 7678 states and 21127 transitions. [2022-03-01 16:19:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-01 16:19:57,791 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-01 16:19:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:57,805 INFO L225 Difference]: With dead ends: 7678 [2022-03-01 16:19:57,805 INFO L226 Difference]: Without dead ends: 7582 [2022-03-01 16:19:57,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5366 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2074, Invalid=15482, Unknown=0, NotChecked=0, Total=17556 [2022-03-01 16:19:57,807 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 779 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:57,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 3675 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:19:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2022-03-01 16:19:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 4999. [2022-03-01 16:19:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4998 states have (on average 2.7979191676670667) internal successors, (13984), 4998 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 13984 transitions. [2022-03-01 16:19:57,907 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 13984 transitions. Word has length 75 [2022-03-01 16:19:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:57,907 INFO L470 AbstractCegarLoop]: Abstraction has 4999 states and 13984 transitions. [2022-03-01 16:19:57,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 13984 transitions. [2022-03-01 16:19:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:19:57,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:57,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:57,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-01 16:19:58,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:58,128 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1884818372, now seen corresponding path program 30 times [2022-03-01 16:19:58,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:58,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254420884] [2022-03-01 16:19:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:58,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:58,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254420884] [2022-03-01 16:19:58,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254420884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:19:58,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690412027] [2022-03-01 16:19:58,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:19:58,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:19:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:58,306 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:19:58,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 16:19:58,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:19:58,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:19:58,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:19:58,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:19:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:58,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:19:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:19:59,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690412027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:59,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:59,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-03-01 16:19:59,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670789525] [2022-03-01 16:19:59,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:59,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:19:59,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:19:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:19:59,094 INFO L87 Difference]: Start difference. First operand 4999 states and 13984 transitions. Second operand has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:02,611 INFO L93 Difference]: Finished difference Result 12901 states and 35852 transitions. [2022-03-01 16:20:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-01 16:20:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:02,633 INFO L225 Difference]: With dead ends: 12901 [2022-03-01 16:20:02,633 INFO L226 Difference]: Without dead ends: 12766 [2022-03-01 16:20:02,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2577, Invalid=16055, Unknown=0, NotChecked=0, Total=18632 [2022-03-01 16:20:02,635 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1575 mSDsluCounter, 4309 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:02,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 4252 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:20:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12766 states. [2022-03-01 16:20:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12766 to 6975. [2022-03-01 16:20:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6975 states, 6974 states have (on average 2.810725552050473) internal successors, (19602), 6974 states have internal predecessors, (19602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 19602 transitions. [2022-03-01 16:20:02,848 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 19602 transitions. Word has length 75 [2022-03-01 16:20:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:02,848 INFO L470 AbstractCegarLoop]: Abstraction has 6975 states and 19602 transitions. [2022-03-01 16:20:02,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 19602 transitions. [2022-03-01 16:20:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:20:02,870 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:02,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:02,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:03,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:03,083 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash -56449050, now seen corresponding path program 31 times [2022-03-01 16:20:03,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:03,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958183856] [2022-03-01 16:20:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:03,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:03,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958183856] [2022-03-01 16:20:03,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958183856] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:03,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725103342] [2022-03-01 16:20:03,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:20:03,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:03,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:03,174 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 16:20:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:03,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:20:03,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:03,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:03,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725103342] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:03,804 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:03,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-01 16:20:03,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448685571] [2022-03-01 16:20:03,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:03,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:20:03,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:03,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:20:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:20:03,805 INFO L87 Difference]: Start difference. First operand 6975 states and 19602 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:07,165 INFO L93 Difference]: Finished difference Result 11417 states and 32014 transitions. [2022-03-01 16:20:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-01 16:20:07,166 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:07,183 INFO L225 Difference]: With dead ends: 11417 [2022-03-01 16:20:07,183 INFO L226 Difference]: Without dead ends: 11321 [2022-03-01 16:20:07,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9203 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3354, Invalid=24036, Unknown=0, NotChecked=0, Total=27390 [2022-03-01 16:20:07,187 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 949 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 4220 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:20:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11321 states. [2022-03-01 16:20:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11321 to 6382. [2022-03-01 16:20:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 6381 states have (on average 2.8111581256856293) internal successors, (17938), 6381 states have internal predecessors, (17938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 17938 transitions. [2022-03-01 16:20:07,387 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 17938 transitions. Word has length 75 [2022-03-01 16:20:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:07,388 INFO L470 AbstractCegarLoop]: Abstraction has 6382 states and 17938 transitions. [2022-03-01 16:20:07,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 17938 transitions. [2022-03-01 16:20:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:20:07,412 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:07,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:07,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:07,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-01 16:20:07,612 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash -94636020, now seen corresponding path program 32 times [2022-03-01 16:20:07,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:07,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32912708] [2022-03-01 16:20:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:07,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:07,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32912708] [2022-03-01 16:20:07,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32912708] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:07,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143523551] [2022-03-01 16:20:07,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:20:07,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:07,707 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:07,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 16:20:07,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:20:07,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:07,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:20:07,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:08,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-01 16:20:08,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143523551] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:08,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:08,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 30 [2022-03-01 16:20:08,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383948352] [2022-03-01 16:20:08,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:08,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 16:20:08,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 16:20:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2022-03-01 16:20:08,258 INFO L87 Difference]: Start difference. First operand 6382 states and 17938 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:10,161 INFO L93 Difference]: Finished difference Result 9969 states and 27696 transitions. [2022-03-01 16:20:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 16:20:10,161 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:10,179 INFO L225 Difference]: With dead ends: 9969 [2022-03-01 16:20:10,179 INFO L226 Difference]: Without dead ends: 9834 [2022-03-01 16:20:10,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1560, Invalid=10212, Unknown=0, NotChecked=0, Total=11772 [2022-03-01 16:20:10,181 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 678 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:10,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 2738 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2022-03-01 16:20:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 6802. [2022-03-01 16:20:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6802 states, 6801 states have (on average 2.809733862667255) internal successors, (19109), 6801 states have internal predecessors, (19109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6802 states to 6802 states and 19109 transitions. [2022-03-01 16:20:10,325 INFO L78 Accepts]: Start accepts. Automaton has 6802 states and 19109 transitions. Word has length 75 [2022-03-01 16:20:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:10,325 INFO L470 AbstractCegarLoop]: Abstraction has 6802 states and 19109 transitions. [2022-03-01 16:20:10,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6802 states and 19109 transitions. [2022-03-01 16:20:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:20:10,336 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:10,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:10,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:10,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-01 16:20:10,552 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1124573010, now seen corresponding path program 33 times [2022-03-01 16:20:10,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:10,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573914780] [2022-03-01 16:20:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:10,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:10,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573914780] [2022-03-01 16:20:10,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573914780] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:10,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796255396] [2022-03-01 16:20:10,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:20:10,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:10,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:10,657 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:10,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 16:20:10,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:20:10,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:10,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 16:20:10,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:10,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:11,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796255396] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:11,098 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:11,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2022-03-01 16:20:11,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853965920] [2022-03-01 16:20:11,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:11,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:20:11,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:11,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:20:11,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:20:11,099 INFO L87 Difference]: Start difference. First operand 6802 states and 19109 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:11,361 INFO L93 Difference]: Finished difference Result 9433 states and 26308 transitions. [2022-03-01 16:20:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 16:20:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:11,380 INFO L225 Difference]: With dead ends: 9433 [2022-03-01 16:20:11,380 INFO L226 Difference]: Without dead ends: 9346 [2022-03-01 16:20:11,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:20:11,381 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 207 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:11,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1321 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:20:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2022-03-01 16:20:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 6070. [2022-03-01 16:20:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 2.8149612786290987) internal successors, (17084), 6069 states have internal predecessors, (17084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 17084 transitions. [2022-03-01 16:20:11,538 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 17084 transitions. Word has length 75 [2022-03-01 16:20:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:11,538 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 17084 transitions. [2022-03-01 16:20:11,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 17084 transitions. [2022-03-01 16:20:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:20:11,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:11,546 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:11,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:11,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-01 16:20:11,754 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1452622918, now seen corresponding path program 34 times [2022-03-01 16:20:11,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:11,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644580777] [2022-03-01 16:20:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:11,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:11,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644580777] [2022-03-01 16:20:11,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644580777] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:11,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792956994] [2022-03-01 16:20:11,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:20:11,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:11,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:11,856 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:11,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 16:20:11,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:20:11,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:11,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:20:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:12,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:20:12,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792956994] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:12,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:12,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-01 16:20:12,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750650597] [2022-03-01 16:20:12,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:12,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:20:12,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:20:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:20:12,423 INFO L87 Difference]: Start difference. First operand 6070 states and 17084 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:15,408 INFO L93 Difference]: Finished difference Result 9376 states and 26076 transitions. [2022-03-01 16:20:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-01 16:20:15,408 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:15,422 INFO L225 Difference]: With dead ends: 9376 [2022-03-01 16:20:15,422 INFO L226 Difference]: Without dead ends: 9253 [2022-03-01 16:20:15,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8636 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3300, Invalid=22140, Unknown=0, NotChecked=0, Total=25440 [2022-03-01 16:20:15,429 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1024 mSDsluCounter, 3584 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:15,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3565 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2022-03-01 16:20:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 4848. [2022-03-01 16:20:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 4847 states have (on average 2.784402723334021) internal successors, (13496), 4847 states have internal predecessors, (13496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 13496 transitions. [2022-03-01 16:20:15,512 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 13496 transitions. Word has length 75 [2022-03-01 16:20:15,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:15,513 INFO L470 AbstractCegarLoop]: Abstraction has 4848 states and 13496 transitions. [2022-03-01 16:20:15,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:15,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 13496 transitions. [2022-03-01 16:20:15,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:20:15,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:15,518 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:15,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-01 16:20:15,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-01 16:20:15,720 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash -922035642, now seen corresponding path program 35 times [2022-03-01 16:20:15,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:15,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058385454] [2022-03-01 16:20:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:15,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:15,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:15,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058385454] [2022-03-01 16:20:15,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058385454] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:15,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367403910] [2022-03-01 16:20:15,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:20:15,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:15,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:15,795 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:15,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 16:20:15,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:20:15,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:15,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:20:15,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:16,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:16,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367403910] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:16,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:16,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-01 16:20:16,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609119615] [2022-03-01 16:20:16,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:16,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:20:16,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:16,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:20:16,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:20:16,360 INFO L87 Difference]: Start difference. First operand 4848 states and 13496 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:18,771 INFO L93 Difference]: Finished difference Result 6232 states and 17052 transitions. [2022-03-01 16:20:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-01 16:20:18,783 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:18,793 INFO L225 Difference]: With dead ends: 6232 [2022-03-01 16:20:18,793 INFO L226 Difference]: Without dead ends: 6181 [2022-03-01 16:20:18,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3111 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1525, Invalid=9817, Unknown=0, NotChecked=0, Total=11342 [2022-03-01 16:20:18,796 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 809 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:18,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 3438 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:20:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-03-01 16:20:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 5092. [2022-03-01 16:20:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 2.7929679827145946) internal successors, (14219), 5091 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 14219 transitions. [2022-03-01 16:20:18,862 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 14219 transitions. Word has length 75 [2022-03-01 16:20:18,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:18,863 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 14219 transitions. [2022-03-01 16:20:18,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 14219 transitions. [2022-03-01 16:20:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 16:20:18,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:18,869 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:18,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:19,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:19,085 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1391263278, now seen corresponding path program 36 times [2022-03-01 16:20:19,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:19,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838511284] [2022-03-01 16:20:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:19,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:19,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838511284] [2022-03-01 16:20:19,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838511284] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:19,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151923626] [2022-03-01 16:20:19,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:20:19,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:19,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:19,211 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:19,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 16:20:19,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:20:19,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:19,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:20:19,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:19,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:19,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151923626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:19,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:19,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-03-01 16:20:19,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440339550] [2022-03-01 16:20:19,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:19,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 16:20:19,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 16:20:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:20:19,738 INFO L87 Difference]: Start difference. First operand 5092 states and 14219 transitions. Second operand has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:21,021 INFO L93 Difference]: Finished difference Result 6852 states and 18818 transitions. [2022-03-01 16:20:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 16:20:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 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 75 [2022-03-01 16:20:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:21,031 INFO L225 Difference]: With dead ends: 6852 [2022-03-01 16:20:21,031 INFO L226 Difference]: Without dead ends: 6822 [2022-03-01 16:20:21,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1802, Invalid=6570, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:20:21,031 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 826 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:21,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1828 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:20:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2022-03-01 16:20:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 5256. [2022-03-01 16:20:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 5255 states have (on average 2.7954329210275928) internal successors, (14690), 5255 states have internal predecessors, (14690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 14690 transitions. [2022-03-01 16:20:21,103 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 14690 transitions. Word has length 75 [2022-03-01 16:20:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:21,115 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 14690 transitions. [2022-03-01 16:20:21,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 14690 transitions. [2022-03-01 16:20:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:21,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:21,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:21,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:21,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-01 16:20:21,330 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1936914827, now seen corresponding path program 37 times [2022-03-01 16:20:21,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:21,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020535892] [2022-03-01 16:20:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:21,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:21,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020535892] [2022-03-01 16:20:21,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020535892] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:21,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805135850] [2022-03-01 16:20:21,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:20:21,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:21,432 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:21,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 16:20:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:21,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 16:20:21,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:21,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:21,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805135850] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:21,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:21,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-03-01 16:20:21,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462484784] [2022-03-01 16:20:21,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:21,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 16:20:21,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 16:20:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:20:21,939 INFO L87 Difference]: Start difference. First operand 5256 states and 14690 transitions. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:22,476 INFO L93 Difference]: Finished difference Result 6563 states and 18110 transitions. [2022-03-01 16:20:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:20:22,476 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 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 79 [2022-03-01 16:20:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:22,487 INFO L225 Difference]: With dead ends: 6563 [2022-03-01 16:20:22,488 INFO L226 Difference]: Without dead ends: 6563 [2022-03-01 16:20:22,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=773, Invalid=2533, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:20:22,493 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 549 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:22,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1557 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:20:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-03-01 16:20:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5346. [2022-03-01 16:20:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5345 states have (on average 2.802806361085126) internal successors, (14981), 5345 states have internal predecessors, (14981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 14981 transitions. [2022-03-01 16:20:22,581 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 14981 transitions. Word has length 79 [2022-03-01 16:20:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:22,582 INFO L470 AbstractCegarLoop]: Abstraction has 5346 states and 14981 transitions. [2022-03-01 16:20:22,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 14981 transitions. [2022-03-01 16:20:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:22,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:22,589 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:22,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:22,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:22,796 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:22,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2100757425, now seen corresponding path program 38 times [2022-03-01 16:20:22,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:22,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187424240] [2022-03-01 16:20:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:22,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:22,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:22,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187424240] [2022-03-01 16:20:22,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187424240] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:22,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213718064] [2022-03-01 16:20:22,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:20:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:22,885 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:22,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 16:20:22,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:20:22,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:22,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 16:20:22,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:23,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:23,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213718064] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:23,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:23,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-03-01 16:20:23,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854116969] [2022-03-01 16:20:23,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:23,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 16:20:23,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 16:20:23,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:20:23,445 INFO L87 Difference]: Start difference. First operand 5346 states and 14981 transitions. Second operand has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:24,544 INFO L93 Difference]: Finished difference Result 8611 states and 23427 transitions. [2022-03-01 16:20:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 16:20:24,544 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:24,558 INFO L225 Difference]: With dead ends: 8611 [2022-03-01 16:20:24,558 INFO L226 Difference]: Without dead ends: 8611 [2022-03-01 16:20:24,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2433, Invalid=9999, Unknown=0, NotChecked=0, Total=12432 [2022-03-01 16:20:24,560 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 915 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:24,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 2121 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:20:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2022-03-01 16:20:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 5558. [2022-03-01 16:20:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 2.813028612560734) internal successors, (15632), 5557 states have internal predecessors, (15632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 15632 transitions. [2022-03-01 16:20:24,649 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 15632 transitions. Word has length 79 [2022-03-01 16:20:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:24,649 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 15632 transitions. [2022-03-01 16:20:24,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 15632 transitions. [2022-03-01 16:20:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:24,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:24,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:24,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:24,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:24,858 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:24,858 INFO L85 PathProgramCache]: Analyzing trace with hash -562924017, now seen corresponding path program 39 times [2022-03-01 16:20:24,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:24,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867188860] [2022-03-01 16:20:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:24,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:20:24,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:24,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867188860] [2022-03-01 16:20:24,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867188860] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:24,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114508824] [2022-03-01 16:20:24,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:20:24,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:24,948 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:24,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 16:20:25,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:20:25,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 16:20:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-01 16:20:25,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 16:20:25,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114508824] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:25,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 16:20:25,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-03-01 16:20:25,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142361635] [2022-03-01 16:20:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:25,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:20:25,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:20:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:20:25,220 INFO L87 Difference]: Start difference. First operand 5558 states and 15632 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:25,319 INFO L93 Difference]: Finished difference Result 5675 states and 15909 transitions. [2022-03-01 16:20:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:20:25,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:25,320 INFO L225 Difference]: With dead ends: 5675 [2022-03-01 16:20:25,320 INFO L226 Difference]: Without dead ends: 0 [2022-03-01 16:20:25,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2022-03-01 16:20:25,320 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 158 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:25,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 682 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-01 16:20:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-01 16:20:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-01 16:20:25,321 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-03-01 16:20:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:25,321 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-01 16:20:25,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-01 16:20:25,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-01 16:20:25,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:20:25,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:20:25,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:20:25,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:25,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-01 16:20:25,550 INFO L732 BasicCegarLoop]: Path program histogram: [39, 2, 2, 1, 1] [2022-03-01 16:20:25,552 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:20:25,552 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:20:25,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:20:25 BasicIcfg [2022-03-01 16:20:25,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:20:25,556 INFO L158 Benchmark]: Toolchain (without parser) took 76642.51ms. Allocated memory was 182.5MB in the beginning and 702.5MB in the end (delta: 520.1MB). Free memory was 156.2MB in the beginning and 281.4MB in the end (delta: -125.2MB). Peak memory consumption was 394.9MB. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.27ms. Allocated memory is still 182.5MB. Free memory was 155.7MB in the beginning and 154.3MB in the end (delta: 1.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.04ms. Allocated memory is still 182.5MB. Free memory was 154.3MB in the beginning and 152.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L158 Benchmark]: Boogie Preprocessor took 12.63ms. Allocated memory is still 182.5MB. Free memory was 152.9MB in the beginning and 151.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L158 Benchmark]: RCFGBuilder took 267.94ms. Allocated memory is still 182.5MB. Free memory was 151.8MB in the beginning and 140.0MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L158 Benchmark]: TraceAbstraction took 76133.05ms. Allocated memory was 182.5MB in the beginning and 702.5MB in the end (delta: 520.1MB). Free memory was 139.7MB in the beginning and 281.4MB in the end (delta: -141.7MB). Peak memory consumption was 378.8MB. Max. memory is 8.0GB. [2022-03-01 16:20:25,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.27ms. Allocated memory is still 182.5MB. Free memory was 155.7MB in the beginning and 154.3MB in the end (delta: 1.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.04ms. Allocated memory is still 182.5MB. Free memory was 154.3MB in the beginning and 152.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.63ms. Allocated memory is still 182.5MB. Free memory was 152.9MB in the beginning and 151.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 267.94ms. Allocated memory is still 182.5MB. Free memory was 151.8MB in the beginning and 140.0MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 76133.05ms. Allocated memory was 182.5MB in the beginning and 702.5MB in the end (delta: 520.1MB). Free memory was 139.7MB in the beginning and 281.4MB in the end (delta: -141.7MB). Peak memory consumption was 378.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 76.1s, OverallIterations: 45, TraceHistogramMax: 3, PathProgramHistogramMax: 39, EmptinessCheckTime: 0.3s, AutomataDifference: 40.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22676 SdHoareTripleChecker+Valid, 11.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22676 mSDsluCounter, 70671 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69388 mSDsCounter, 2891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33866 IncrementalHoareTripleChecker+Invalid, 36757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2891 mSolverCounterUnsat, 5951 mSDtfsCounter, 33866 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8013 GetRequests, 5382 SyntacticMatches, 48 SemanticMatches, 2583 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66381 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6975occurred in iteration=36, InterpolantAutomatonStates: 2078, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 45 MinimizatonAttempts, 68903 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 5877 NumberOfCodeBlocks, 5825 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 8326 ConstructedInterpolants, 0 QuantifiedInterpolants, 33388 SizeOfPredicates, 378 NumberOfNonLiveVariables, 5884 ConjunctsInSsa, 593 ConjunctsInUnsatCore, 119 InterpolantComputations, 10 PerfectInterpolantSequences, 458/912 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-01 16:20:25,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...