/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-sets/test_mutex_unbounded-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:39:59,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:39:59,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:39:59,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:39:59,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:39:59,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:39:59,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:39:59,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:39:59,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:39:59,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:39:59,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:39:59,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:39:59,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:39:59,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:39:59,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:39:59,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:39:59,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:39:59,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:39:59,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:39:59,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:39:59,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:39:59,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:39:59,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:39:59,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:39:59,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:39:59,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:39:59,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:39:59,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:39:59,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:39:59,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:39:59,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:39:59,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:39:59,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:39:59,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:39:59,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:39:59,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:39:59,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:39:59,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:39:59,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:39:59,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:39:59,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:39:59,476 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 [2020-10-28 14:39:59,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:39:59,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:39:59,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:39:59,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:39:59,537 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:39:59,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:39:59,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:39:59,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:39:59,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:39:59,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:39:59,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:39:59,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:39:59,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:39:59,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:39:59,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:39:59,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:39:59,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:39:59,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:39:59,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:39:59,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:39:59,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:39:59,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:39:59,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:39:59,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:39:59,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:39:59,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:39:59,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:39:59,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:39:59,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:39:59,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:40:00,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:40:00,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:40:00,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:40:00,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:40:00,071 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:40:00,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-2.i [2020-10-28 14:40:00,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87e658cfa/10d5c377187b47dcb50b5b92ddadaea8/FLAG472149233 [2020-10-28 14:40:00,978 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:40:00,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-2.i [2020-10-28 14:40:01,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87e658cfa/10d5c377187b47dcb50b5b92ddadaea8/FLAG472149233 [2020-10-28 14:40:01,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87e658cfa/10d5c377187b47dcb50b5b92ddadaea8 [2020-10-28 14:40:01,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:40:01,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:40:01,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:40:01,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:40:01,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:40:01,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aee33ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01, skipping insertion in model container [2020-10-28 14:40:01,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:40:01,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:40:01,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:40:01,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:40:01,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:40:01,708 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:40:01,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01 WrapperNode [2020-10-28 14:40:01,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:40:01,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:40:01,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:40:01,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:40:01,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (1/1) ... [2020-10-28 14:40:01,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:40:01,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:40:01,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:40:01,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:40:01,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (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 [2020-10-28 14:40:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:40:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:40:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:40:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:40:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:40:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 14:40:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-28 14:40:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-10-28 14:40:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-28 14:40:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-28 14:40:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-28 14:40:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-28 14:40:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-28 14:40:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-28 14:40:01,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-10-28 14:40:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-10-28 14:40:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-28 14:40:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-10-28 14:40:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-10-28 14:40:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-10-28 14:40:01,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-28 14:40:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-10-28 14:40:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-10-28 14:40:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-28 14:40:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-28 14:40:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:40:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:40:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:40:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:40:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:40:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:40:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:40:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:40:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:40:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:40:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:40:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:40:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:40:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:40:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:40:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:40:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:40:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:40:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:40:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:40:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:40:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:40:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:40:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:40:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:40:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:40:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:40:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:40:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:40:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:40:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 14:40:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:40:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-28 14:40:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:40:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-10-28 14:40:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-28 14:40:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:40:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-28 14:40:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-28 14:40:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-28 14:40:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:40:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-28 14:40:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-28 14:40:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-10-28 14:40:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-10-28 14:40:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-28 14:40:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-10-28 14:40:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-10-28 14:40:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:40:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:40:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:40:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:40:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:40:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:40:02,730 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:40:02,730 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-28 14:40:02,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:40:02 BoogieIcfgContainer [2020-10-28 14:40:02,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:40:02,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:40:02,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:40:02,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:40:02,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:40:01" (1/3) ... [2020-10-28 14:40:02,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b24175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:40:02, skipping insertion in model container [2020-10-28 14:40:02,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:40:01" (2/3) ... [2020-10-28 14:40:02,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b24175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:40:02, skipping insertion in model container [2020-10-28 14:40:02,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:40:02" (3/3) ... [2020-10-28 14:40:02,753 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2020-10-28 14:40:02,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:40:02,779 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:40:02,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:40:02,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:40:02,857 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:40:02,858 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:40:02,858 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:40:02,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:40:02,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:40:02,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:40:02,862 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:40:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-10-28 14:40:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:40:02,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:02,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:02,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:02,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1586331323, now seen corresponding path program 1 times [2020-10-28 14:40:02,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:02,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116853547] [2020-10-28 14:40:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:03,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:04,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:40:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:40:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-28 14:40:04,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:04,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 14:40:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:04,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 14:40:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:04,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:04,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:04,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:40:04,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:04,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:40:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:40:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 14:40:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:40:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:40:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:04,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:04,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:40:04,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:40:04,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:04,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:40:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:40:04,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116853547] [2020-10-28 14:40:04,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:40:04,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:40:04,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068946994] [2020-10-28 14:40:04,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:40:04,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:04,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:40:04,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:40:04,718 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 3 states. [2020-10-28 14:40:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:05,166 INFO L93 Difference]: Finished difference Result 253 states and 334 transitions. [2020-10-28 14:40:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:40:05,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-28 14:40:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:05,182 INFO L225 Difference]: With dead ends: 253 [2020-10-28 14:40:05,182 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 14:40:05,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:40:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 14:40:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-10-28 14:40:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 14:40:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-10-28 14:40:05,257 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 26 [2020-10-28 14:40:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:05,257 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-10-28 14:40:05,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:40:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-10-28 14:40:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:40:05,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:05,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:05,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:40:05,261 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:05,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:05,262 INFO L82 PathProgramCache]: Analyzing trace with hash -691655877, now seen corresponding path program 1 times [2020-10-28 14:40:05,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:05,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715220994] [2020-10-28 14:40:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:40:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 14:40:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:40:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:05,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:05,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:05,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:40:05,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:05,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:05,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:40:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:05,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:05,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 14:40:05,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:05,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:40:05,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:05,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:05,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:05,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:40:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:05,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:05,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:40:05,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:40:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:05,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:40:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:40:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:40:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:40:05,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715220994] [2020-10-28 14:40:05,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:40:05,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:40:05,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214229304] [2020-10-28 14:40:05,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:40:05,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:05,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:40:05,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:40:05,932 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 5 states. [2020-10-28 14:40:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:06,627 INFO L93 Difference]: Finished difference Result 138 states and 166 transitions. [2020-10-28 14:40:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:40:06,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-28 14:40:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:06,634 INFO L225 Difference]: With dead ends: 138 [2020-10-28 14:40:06,634 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 14:40:06,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:40:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 14:40:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 109. [2020-10-28 14:40:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 14:40:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-10-28 14:40:06,674 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 26 [2020-10-28 14:40:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:06,674 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-10-28 14:40:06,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:40:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-10-28 14:40:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:40:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:06,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:06,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:40:06,679 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:06,681 INFO L82 PathProgramCache]: Analyzing trace with hash 673632036, now seen corresponding path program 1 times [2020-10-28 14:40:06,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:06,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036632224] [2020-10-28 14:40:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:07,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:07,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:40:07,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:40:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 14:40:07,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:07,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:40:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:40:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:40:07,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:07,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:07,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:07,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:07,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:07,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:40:07,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:07,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:40:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:07,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:40:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:07,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:07,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 14:40:07,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:40:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:07,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:40:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:40:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:40:07,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:40:07,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:07,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:40:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:40:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:40:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:40:07,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036632224] [2020-10-28 14:40:07,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:40:07,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:40:07,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251206932] [2020-10-28 14:40:07,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:40:07,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:40:07,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:40:07,467 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 6 states. [2020-10-28 14:40:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:08,876 INFO L93 Difference]: Finished difference Result 322 states and 397 transitions. [2020-10-28 14:40:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:40:08,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-28 14:40:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:08,882 INFO L225 Difference]: With dead ends: 322 [2020-10-28 14:40:08,882 INFO L226 Difference]: Without dead ends: 229 [2020-10-28 14:40:08,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:40:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-28 14:40:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 165. [2020-10-28 14:40:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 14:40:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 199 transitions. [2020-10-28 14:40:08,924 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 199 transitions. Word has length 26 [2020-10-28 14:40:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:08,924 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 199 transitions. [2020-10-28 14:40:08,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:40:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 199 transitions. [2020-10-28 14:40:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:40:08,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:08,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:08,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:40:08,926 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1970079789, now seen corresponding path program 1 times [2020-10-28 14:40:08,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:08,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542836031] [2020-10-28 14:40:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:09,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:09,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:40:09,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:40:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-28 14:40:09,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:09,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:40:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 14:40:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:40:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:09,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:09,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:09,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:40:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:09,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:40:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:09,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:09,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 14:40:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:40:09,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:09,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:40:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:40:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:09,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:09,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:40:09,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:40:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:40:09,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542836031] [2020-10-28 14:40:09,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:40:09,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:40:09,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825183423] [2020-10-28 14:40:09,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:40:09,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:09,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:40:09,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:40:09,396 INFO L87 Difference]: Start difference. First operand 165 states and 199 transitions. Second operand 6 states. [2020-10-28 14:40:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:10,292 INFO L93 Difference]: Finished difference Result 310 states and 369 transitions. [2020-10-28 14:40:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:40:10,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-28 14:40:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:10,295 INFO L225 Difference]: With dead ends: 310 [2020-10-28 14:40:10,295 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 14:40:10,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:40:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 14:40:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 125. [2020-10-28 14:40:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 14:40:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2020-10-28 14:40:10,321 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 28 [2020-10-28 14:40:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:10,321 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2020-10-28 14:40:10,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:40:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2020-10-28 14:40:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:40:10,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:10,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:10,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:40:10,323 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash 698292713, now seen corresponding path program 1 times [2020-10-28 14:40:10,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:10,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668941652] [2020-10-28 14:40:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:10,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:40:10,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 14:40:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:10,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:40:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:40:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 14:40:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:10,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:10,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:40:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:10,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:40:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:40:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:10,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 14:40:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:40:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:10,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:40:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:10,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:40:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:40:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:40:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:40:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:40:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:40:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:10,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:10,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:40:10,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:10,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:40:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:40:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:40:10,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668941652] [2020-10-28 14:40:10,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:40:10,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 14:40:10,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010788762] [2020-10-28 14:40:10,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:40:10,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:40:10,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:40:10,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:40:10,785 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand 9 states. [2020-10-28 14:40:12,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:40:12,077 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2020-10-28 14:40:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:40:12,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-28 14:40:12,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:40:12,080 INFO L225 Difference]: With dead ends: 161 [2020-10-28 14:40:12,080 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 14:40:12,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:40:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 14:40:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-10-28 14:40:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 14:40:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 140 transitions. [2020-10-28 14:40:12,113 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 140 transitions. Word has length 30 [2020-10-28 14:40:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:40:12,113 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 140 transitions. [2020-10-28 14:40:12,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:40:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 140 transitions. [2020-10-28 14:40:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 14:40:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:40:12,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:40:12,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:40:12,119 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:40:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:40:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2016264654, now seen corresponding path program 1 times [2020-10-28 14:40:12,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:40:12,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585650108] [2020-10-28 14:40:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:40:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:13,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:40:13,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-28 14:40:13,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:13,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 14:40:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:40:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:40:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:40:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:13,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:13,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:13,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:40:13,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:13,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:40:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:40:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:40:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:13,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:40:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:40:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:13,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:13,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:40:13,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:40:13,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:13,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:40:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:40:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:40:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:13,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:13,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:13,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:40:13,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:13,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:40:13,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:13,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:13,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:40:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:40:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:40:13,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:40:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:13,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:13,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:40:13,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 14:40:13,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:13,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:40:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:40:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:40:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:40:14,226 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-28 14:40:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:40:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:40:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:40:14,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:40:14,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:40:14,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:40:14,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-28 14:40:14,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:40:14,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:40:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:40:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:40:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:40:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0