/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:13:33,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:13:33,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:13:33,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:13:33,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:13:33,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:13:33,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:13:33,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:13:33,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:13:33,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:13:33,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:13:33,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:13:33,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:13:33,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:13:33,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:13:33,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:13:33,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:13:33,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:13:33,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:13:33,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:13:33,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:13:33,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:13:33,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:13:33,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:13:33,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:13:33,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:13:33,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:13:33,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:13:33,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:13:33,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:13:33,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:13:33,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:13:33,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:13:33,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:13:33,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:13:33,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:13:33,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:13:33,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:13:33,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:13:33,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:13:33,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:13:33,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:13:33,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:13:33,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:13:33,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:13:33,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:13:33,726 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:13:33,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:13:33,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:13:33,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:13:33,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:13:33,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:13:33,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:13:33,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:13:33,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:13:33,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:13:33,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:13:33,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:13:33,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:13:33,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:13:33,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:13:33,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:13:33,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:13:33,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:13:33,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:13:33,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:13:33,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:13:33,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:13:33,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:13:33,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:13:33,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:13:33,731 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:13:34,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:13:34,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:13:34,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:13:34,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:13:34,183 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:13:34,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-10-27 01:13:34,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3580883d/b043ba661ebe4932846f13fb2e6133cd/FLAG410c89dd1 [2020-10-27 01:13:35,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:13:35,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-10-27 01:13:35,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3580883d/b043ba661ebe4932846f13fb2e6133cd/FLAG410c89dd1 [2020-10-27 01:13:35,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3580883d/b043ba661ebe4932846f13fb2e6133cd [2020-10-27 01:13:35,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:13:35,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:13:35,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:13:35,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:13:35,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:13:35,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:35,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e58be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35, skipping insertion in model container [2020-10-27 01:13:35,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:35,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:13:35,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:13:35,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:13:35,832 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:13:35,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:13:35,977 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:13:35,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35 WrapperNode [2020-10-27 01:13:35,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:13:35,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:13:35,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:13:35,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:13:35,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... [2020-10-27 01:13:36,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:13:36,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:13:36,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:13:36,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:13:36,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:13:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:13:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:13:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:13:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-27 01:13:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-10-27 01:13:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-10-27 01:13:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-27 01:13:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-10-27 01:13:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:13:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:13:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:13:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:13:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:13:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-27 01:13:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-27 01:13:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-27 01:13:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-27 01:13:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-27 01:13:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-27 01:13:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-27 01:13:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-27 01:13:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-27 01:13:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-27 01:13:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-27 01:13:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-27 01:13:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-27 01:13:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-27 01:13:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-27 01:13:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-27 01:13:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-27 01:13:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-27 01:13:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-27 01:13:36,191 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-27 01:13:36,191 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-27 01:13:36,191 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-27 01:13:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-27 01:13:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-27 01:13:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-27 01:13:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-27 01:13:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-27 01:13:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-27 01:13:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-27 01:13:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-27 01:13:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-27 01:13:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-27 01:13:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-27 01:13:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-27 01:13:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-27 01:13:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-27 01:13:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-27 01:13:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-27 01:13:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-27 01:13:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-27 01:13:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-27 01:13:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-27 01:13:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-27 01:13:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 01:13:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-27 01:13:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-27 01:13:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-27 01:13:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-27 01:13:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-27 01:13:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-27 01:13:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-27 01:13:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-27 01:13:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-27 01:13:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-27 01:13:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-27 01:13:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-27 01:13:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-27 01:13:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-27 01:13:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-27 01:13:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-27 01:13:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-27 01:13:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-27 01:13:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-27 01:13:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-27 01:13:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-27 01:13:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-27 01:13:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-27 01:13:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-27 01:13:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-27 01:13:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-27 01:13:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-27 01:13:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:13:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-10-27 01:13:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-10-27 01:13:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-10-27 01:13:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-10-27 01:13:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-10-27 01:13:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-10-27 01:13:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-10-27 01:13:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-10-27 01:13:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-10-27 01:13:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-10-27 01:13:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:13:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-10-27 01:13:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-10-27 01:13:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-27 01:13:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-10-27 01:13:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:13:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:13:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:13:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:13:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:13:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:13:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:13:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:13:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:13:36,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:13:36,879 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:13:36,879 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:13:36,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:36 BoogieIcfgContainer [2020-10-27 01:13:36,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:13:36,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:13:36,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:13:36,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:13:36,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:13:35" (1/3) ... [2020-10-27 01:13:36,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bbd78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:36, skipping insertion in model container [2020-10-27 01:13:36,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:35" (2/3) ... [2020-10-27 01:13:36,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bbd78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:36, skipping insertion in model container [2020-10-27 01:13:36,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:36" (3/3) ... [2020-10-27 01:13:36,890 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-10-27 01:13:36,903 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:13:36,909 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:13:36,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:13:36,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:13:36,954 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:13:36,955 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:13:36,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:13:36,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:13:36,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:13:36,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:13:36,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:13:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-27 01:13:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 01:13:36,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:36,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:36,982 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1851277019, now seen corresponding path program 1 times [2020-10-27 01:13:36,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:37,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062991449] [2020-10-27 01:13:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:37,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:37,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 01:13:37,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-27 01:13:37,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:13:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:13:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:13:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:13:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:37,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:13:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:13:37,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062991449] [2020-10-27 01:13:37,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:37,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:13:37,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5584549] [2020-10-27 01:13:37,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:13:37,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:37,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:13:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:13:37,863 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 7 states. [2020-10-27 01:13:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:38,398 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2020-10-27 01:13:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:13:38,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-27 01:13:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:38,411 INFO L225 Difference]: With dead ends: 95 [2020-10-27 01:13:38,411 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 01:13:38,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:13:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 01:13:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-27 01:13:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 01:13:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-27 01:13:38,470 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 14 [2020-10-27 01:13:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:38,471 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-27 01:13:38,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:13:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-27 01:13:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:13:38,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:38,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-10-27 01:13:38,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:13:38,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:38,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1540837999, now seen corresponding path program 1 times [2020-10-27 01:13:38,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:38,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022615243] [2020-10-27 01:13:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:43,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:43,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:13:43,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:13:43,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:13:43,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:13:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 01:13:43,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:43,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:13:43,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:13:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:43,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:43,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:43,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:43,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:43,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:13:43,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:43,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:43,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:43,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:13:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:13:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:43,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:43,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:43,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:13:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:43,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:43,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:43,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:43,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:13:43,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:43,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 01:13:43,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022615243] [2020-10-27 01:13:43,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:43,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:13:43,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617983838] [2020-10-27 01:13:43,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:13:43,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:43,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:13:43,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:13:43,842 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 8 states. [2020-10-27 01:13:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:44,643 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-10-27 01:13:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:13:44,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-27 01:13:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:44,648 INFO L225 Difference]: With dead ends: 75 [2020-10-27 01:13:44,648 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 01:13:44,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:13:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 01:13:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-27 01:13:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 01:13:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-10-27 01:13:44,690 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 39 [2020-10-27 01:13:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:44,691 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-10-27 01:13:44,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:13:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-10-27 01:13:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:13:44,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:44,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-10-27 01:13:44,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:13:44,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:44,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2120679678, now seen corresponding path program 1 times [2020-10-27 01:13:44,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:44,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345195284] [2020-10-27 01:13:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:47,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:13:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:13:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3273 [2020-10-27 01:13:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:13:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 01:13:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:48,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:48,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:48,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:13:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:13:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:48,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:13:48,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:48,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:48,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:13:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:13:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 01:13:48,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:48,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:13:48,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:13:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:13:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:13:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:48,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:48,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:13:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:13:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:13:48,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345195284] [2020-10-27 01:13:48,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:48,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 01:13:48,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375696956] [2020-10-27 01:13:48,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:13:48,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:48,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:13:48,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:13:48,430 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 13 states. [2020-10-27 01:13:49,024 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 01:13:49,419 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:13:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:49,862 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2020-10-27 01:13:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:13:49,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-27 01:13:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:49,870 INFO L225 Difference]: With dead ends: 122 [2020-10-27 01:13:49,870 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 01:13:49,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:13:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 01:13:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2020-10-27 01:13:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 01:13:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2020-10-27 01:13:49,888 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 46 [2020-10-27 01:13:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:49,888 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2020-10-27 01:13:49,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:13:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2020-10-27 01:13:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:13:49,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:49,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-10-27 01:13:49,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:13:49,891 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1962936705, now seen corresponding path program 1 times [2020-10-27 01:13:49,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:49,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120306559] [2020-10-27 01:13:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:51,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:51,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:13:51,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:13:51,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2030 [2020-10-27 01:13:51,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:13:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 01:13:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:52,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:52,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:13:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:13:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:52,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:52,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:52,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:13:52,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:13:52,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:52,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:13:52,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:52,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:52,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:52,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:13:52,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:13:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:13:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:13:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:52,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:52,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:13:52,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:13:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:13:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:52,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:13:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:13:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:13:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:13:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:52,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:52,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:52,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:13:52,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:13:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:52,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:13:52,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:13:52,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120306559] [2020-10-27 01:13:52,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:52,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:13:52,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411952163] [2020-10-27 01:13:52,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 01:13:52,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 01:13:52,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:13:52,734 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 25 states. [2020-10-27 01:13:54,349 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-27 01:13:54,698 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-27 01:13:54,871 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-27 01:13:55,041 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-27 01:13:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:56,310 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2020-10-27 01:13:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 01:13:56,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-10-27 01:13:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:56,318 INFO L225 Difference]: With dead ends: 159 [2020-10-27 01:13:56,318 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 01:13:56,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=346, Invalid=2516, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 01:13:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 01:13:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-10-27 01:13:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 01:13:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2020-10-27 01:13:56,355 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 46 [2020-10-27 01:13:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:56,356 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2020-10-27 01:13:56,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 01:13:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2020-10-27 01:13:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:13:56,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:56,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-10-27 01:13:56,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:13:56,358 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1282878335, now seen corresponding path program 1 times [2020-10-27 01:13:56,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:56,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906656827] [2020-10-27 01:13:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:56,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:13:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:13:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-27 01:13:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:13:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 01:13:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:57,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:13:57,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:13:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:57,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:57,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:13:57,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:57,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:13:57,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:13:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:13:57,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:57,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:13:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:57,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:13:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:57,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:57,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:13:57,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:13:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 01:13:57,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906656827] [2020-10-27 01:13:57,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:57,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:13:57,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189394491] [2020-10-27 01:13:57,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:13:57,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:57,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:13:57,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:13:57,609 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand 9 states. [2020-10-27 01:13:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:58,393 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2020-10-27 01:13:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:13:58,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-27 01:13:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:58,397 INFO L225 Difference]: With dead ends: 158 [2020-10-27 01:13:58,397 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 01:13:58,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:13:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 01:13:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2020-10-27 01:13:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 01:13:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2020-10-27 01:13:58,428 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 46 [2020-10-27 01:13:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:58,429 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2020-10-27 01:13:58,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:13:58,429 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2020-10-27 01:13:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:13:58,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:58,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-10-27 01:13:58,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:13:58,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:58,432 INFO L82 PathProgramCache]: Analyzing trace with hash -937444706, now seen corresponding path program 1 times [2020-10-27 01:13:58,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:58,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092067314] [2020-10-27 01:13:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:58,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:58,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:13:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-27 01:13:58,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:13:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 01:13:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 01:13:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:58,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:13:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:58,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:58,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:58,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:58,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:13:58,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:13:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:13:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:59,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:59,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:59,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:13:59,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:13:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:13:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:13:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:59,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:59,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:13:59,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:13:59,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:13:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:13:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:59,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:13:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:13:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:59,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:59,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:13:59,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:13:59,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:13:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:13:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:13:59,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092067314] [2020-10-27 01:13:59,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:59,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 01:13:59,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807370558] [2020-10-27 01:13:59,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:13:59,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:59,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:13:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:13:59,347 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand 22 states. [2020-10-27 01:14:00,834 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-27 01:14:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:01,218 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2020-10-27 01:14:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:14:01,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-10-27 01:14:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:01,221 INFO L225 Difference]: With dead ends: 148 [2020-10-27 01:14:01,221 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 01:14:01,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:14:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 01:14:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 84. [2020-10-27 01:14:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 01:14:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-10-27 01:14:01,240 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 46 [2020-10-27 01:14:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:01,241 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-10-27 01:14:01,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 01:14:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-10-27 01:14:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 01:14:01,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:01,243 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2020-10-27 01:14:01,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:14:01,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:01,244 INFO L82 PathProgramCache]: Analyzing trace with hash 722562417, now seen corresponding path program 1 times [2020-10-27 01:14:01,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:01,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606731411] [2020-10-27 01:14:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:14:06,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:14:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:14:06,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 01:14:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 01:14:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:06,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:14:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:14:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:06,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 01:14:06,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:14:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:14:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:14:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:06,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:14:06,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:06,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:06,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:06,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:06,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:14:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:06,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:14:06,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:14:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:14:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 01:14:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:06,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:14:06,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:14:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:14:06,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606731411] [2020-10-27 01:14:06,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:06,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:14:06,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781573498] [2020-10-27 01:14:06,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:14:06,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:14:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:14:06,916 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 19 states. [2020-10-27 01:14:07,757 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 01:14:08,138 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:14:08,275 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:14:08,739 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:14:08,885 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-27 01:14:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:09,228 INFO L93 Difference]: Finished difference Result 142 states and 163 transitions. [2020-10-27 01:14:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 01:14:09,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-27 01:14:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:09,231 INFO L225 Difference]: With dead ends: 142 [2020-10-27 01:14:09,231 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 01:14:09,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=196, Invalid=1364, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 01:14:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 01:14:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-10-27 01:14:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:14:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-10-27 01:14:09,249 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 58 [2020-10-27 01:14:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:09,249 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-10-27 01:14:09,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:14:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-10-27 01:14:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 01:14:09,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:09,251 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 01:14:09,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:14:09,251 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:09,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:09,252 INFO L82 PathProgramCache]: Analyzing trace with hash -460784880, now seen corresponding path program 1 times [2020-10-27 01:14:09,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:09,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717033107] [2020-10-27 01:14:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:14:14,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:14:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 01:14:14,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:14:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 01:14:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:14,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:14:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:14:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:14,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:14:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:14,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:14,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:14:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:14,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:14:14,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:14,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:14,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:14:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:14,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:14:14,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:14,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:14:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:14,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:14:14,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:14:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 01:14:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:14,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:14:14,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 01:14:14,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717033107] [2020-10-27 01:14:14,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:14,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:14:14,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998688450] [2020-10-27 01:14:14,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:14:14,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:14,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:14:14,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:14:14,754 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand 12 states. [2020-10-27 01:14:15,288 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-27 01:14:15,611 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:14:15,743 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-27 01:14:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:16,003 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-27 01:14:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:14:16,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-27 01:14:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:16,005 INFO L225 Difference]: With dead ends: 84 [2020-10-27 01:14:16,005 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 01:14:16,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:14:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 01:14:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-27 01:14:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 01:14:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-10-27 01:14:16,035 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 58 [2020-10-27 01:14:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:16,037 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-10-27 01:14:16,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:14:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-10-27 01:14:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 01:14:16,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:16,041 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 01:14:16,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:14:16,041 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash 219273490, now seen corresponding path program 1 times [2020-10-27 01:14:16,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:16,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347175164] [2020-10-27 01:14:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4568 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 01:14:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:20,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:20,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:14:20,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:14:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:20,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:20,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:14:20,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:14:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:14:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:14:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:20,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:20,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:20,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:14:20,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:14:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:14:20,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:14:20,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:14:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:14:21,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:14:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:14:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:14:21,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:21,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:21,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 01:14:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:21,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:14:21,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347175164] [2020-10-27 01:14:21,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:21,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:14:21,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604506104] [2020-10-27 01:14:21,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:14:21,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:14:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:14:21,203 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 23 states. [2020-10-27 01:14:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:22,500 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-10-27 01:14:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:14:22,501 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 58 [2020-10-27 01:14:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:22,502 INFO L225 Difference]: With dead ends: 86 [2020-10-27 01:14:22,503 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 01:14:22,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 01:14:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 01:14:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 01:14:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 01:14:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-10-27 01:14:22,522 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 58 [2020-10-27 01:14:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:22,523 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-10-27 01:14:22,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:14:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-10-27 01:14:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 01:14:22,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:22,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2020-10-27 01:14:22,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:14:22,525 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:22,526 INFO L82 PathProgramCache]: Analyzing trace with hash -791843760, now seen corresponding path program 1 times [2020-10-27 01:14:22,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:22,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130499413] [2020-10-27 01:14:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 01:14:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 01:14:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:23,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:14:23,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:23,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:23,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:14:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:14:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:14:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:14:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:23,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:14:23,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:14:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:14:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:14:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:14:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 01:14:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 01:14:23,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130499413] [2020-10-27 01:14:23,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:23,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:14:23,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860250704] [2020-10-27 01:14:23,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:14:23,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:23,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:14:23,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:14:23,748 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 10 states. [2020-10-27 01:14:24,219 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 01:14:24,358 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:14:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:24,555 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-10-27 01:14:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:14:24,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-27 01:14:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:24,556 INFO L225 Difference]: With dead ends: 82 [2020-10-27 01:14:24,557 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 01:14:24,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:14:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 01:14:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-27 01:14:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 01:14:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-27 01:14:24,574 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 58 [2020-10-27 01:14:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:24,575 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-27 01:14:24,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:14:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-27 01:14:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:14:24,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:24,576 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 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] [2020-10-27 01:14:24,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:14:24,576 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2033129857, now seen corresponding path program 1 times [2020-10-27 01:14:24,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:24,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330821859] [2020-10-27 01:14:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 01:14:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:14:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:14:29,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:14:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 01:14:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:14:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:14:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:29,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:14:29,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:29,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:29,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:14:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:14:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:14:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:14:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:14:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:29,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:14:29,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:14:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:29,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:14:29,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 01:14:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:14:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 01:14:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 01:14:30,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330821859] [2020-10-27 01:14:30,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:30,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:14:30,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735049520] [2020-10-27 01:14:30,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:14:30,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:30,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:14:30,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:14:30,136 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 17 states. [2020-10-27 01:14:30,633 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 01:14:30,792 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-27 01:14:31,165 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-27 01:14:31,610 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:14:31,752 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:14:32,059 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-27 01:14:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:32,095 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-27 01:14:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:14:32,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-27 01:14:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:32,097 INFO L225 Difference]: With dead ends: 87 [2020-10-27 01:14:32,097 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 01:14:32,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 01:14:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 01:14:32,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-27 01:14:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 01:14:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-27 01:14:32,123 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 65 [2020-10-27 01:14:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:32,125 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-27 01:14:32,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:14:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-27 01:14:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:14:32,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:32,128 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 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] [2020-10-27 01:14:32,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:14:32,128 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:32,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1240769085, now seen corresponding path program 1 times [2020-10-27 01:14:32,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:32,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917407563] [2020-10-27 01:14:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:14:32,154 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:14:32,154 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:14:32,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:14:32,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:14:32 BoogieIcfgContainer [2020-10-27 01:14:32,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:14:32,204 INFO L168 Benchmark]: Toolchain (without parser) took 56837.97 ms. Allocated memory was 151.0 MB in the beginning and 396.4 MB in the end (delta: 245.4 MB). Free memory was 126.1 MB in the beginning and 147.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 224.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:32,205 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:14:32,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 101.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:32,209 INFO L168 Benchmark]: Boogie Preprocessor took 90.27 ms. Allocated memory is still 151.0 MB. Free memory was 101.7 MB in the beginning and 98.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:32,211 INFO L168 Benchmark]: RCFGBuilder took 809.63 ms. Allocated memory is still 151.0 MB. Free memory was 98.9 MB in the beginning and 92.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:32,212 INFO L168 Benchmark]: TraceAbstraction took 55311.04 ms. Allocated memory was 151.0 MB in the beginning and 396.4 MB in the end (delta: 245.4 MB). Free memory was 92.3 MB in the beginning and 147.3 MB in the end (delta: -55.1 MB). Peak memory consumption was 189.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:32,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 612.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 101.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.27 ms. Allocated memory is still 151.0 MB. Free memory was 101.7 MB in the beginning and 98.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 809.63 ms. Allocated memory is still 151.0 MB. Free memory was 98.9 MB in the beginning and 92.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55311.04 ms. Allocated memory was 151.0 MB in the beginning and 396.4 MB in the end (delta: 245.4 MB). Free memory was 92.3 MB in the beginning and 147.3 MB in the end (delta: -55.1 MB). Peak memory consumption was 189.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L869] void * guard_malloc_counter = 0; [L889] struct list_head *elem = ((void *)0); [L902] static struct list_head head; [L905] struct list_head *dev1, *dev2; [L906] CALL, EXPR my_malloc(sizeof(*dev1)) [L881] CALL, EXPR __getMemory(size) [L873] (size > 0) ? (0) : __blast_assert () [L874] guard_malloc_counter++ [L875] COND FALSE !(!__VERIFIER_nondet_int()) [L877] return (void *) guard_malloc_counter; [L881] RET, EXPR __getMemory(size) [L881] return __getMemory(size); [L906] RET, EXPR my_malloc(sizeof(*dev1)) [L906] dev1 = my_malloc(sizeof(*dev1)) [L907] CALL, EXPR my_malloc(sizeof(*dev2)) [L881] CALL, EXPR __getMemory(size) [L873] (size > 0) ? (0) : __blast_assert () [L874] guard_malloc_counter++ [L875] COND FALSE !(!__VERIFIER_nondet_int()) [L877] return (void *) guard_malloc_counter; [L881] RET, EXPR __getMemory(size) [L881] return __getMemory(size); [L907] RET, EXPR my_malloc(sizeof(*dev2)) [L907] dev2 = my_malloc(sizeof(*dev2)) [L908] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L909] CALL list_add(dev2, &head) [L892] (new!=elem) ? (0) : __blast_assert () [L893] COND TRUE __VERIFIER_nondet_int() [L894] elem = new [L909] RET list_add(dev2, &head) [L910] CALL list_add(dev1, &head) [L892] (new!=elem) ? (0) : __blast_assert () [L893] COND TRUE __VERIFIER_nondet_int() [L894] elem = new [L910] RET list_add(dev1, &head) [L911] CALL list_del(dev2) [L898] COND FALSE !(entry==elem) [L911] RET list_del(dev2) [L912] CALL list_add(dev2, &head) [L892] (new!=elem) ? (0) : __blast_assert () [L893] COND FALSE !(__VERIFIER_nondet_int()) [L912] RET list_add(dev2, &head) [L915] CALL list_add(dev1, &head) [L892] (new!=elem) ? (0) : __blast_assert () [L892] CALL __blast_assert () [L8] CALL reach_error() [L3] __assert_fail("0", "rule60_list2.c_1.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.2s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 491 SDtfs, 773 SDslu, 1253 SDs, 0 SdLazy, 7009 SolverSat, 733 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 105 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 37.5s InterpolantComputationTime, 599 NumberOfCodeBlocks, 599 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 523 ConstructedInterpolants, 0 QuantifiedInterpolants, 143946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 114/182 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...