/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:44:59,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:44:59,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:44:59,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:44:59,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:44:59,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:44:59,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:44:59,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:44:59,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:44:59,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:44:59,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:44:59,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:44:59,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:44:59,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:44:59,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:44:59,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:44:59,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:44:59,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:44:59,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:44:59,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:44:59,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:44:59,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:44:59,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:44:59,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:44:59,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:44:59,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:44:59,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:44:59,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:44:59,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:44:59,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:44:59,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:44:59,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:44:59,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:44:59,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:44:59,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:44:59,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:44:59,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:44:59,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:44:59,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:44:59,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:44:59,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:44:59,965 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 [2020-09-24 22:44:59,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:44:59,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:44:59,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:44:59,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:44:59,997 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:44:59,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:44:59,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:44:59,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:44:59,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:44:59,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:44:59,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:44:59,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:44:59,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:44:59,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:44:59,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:44:59,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:45:00,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:45:00,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:45:00,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:45:00,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:45:00,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:45:00,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:45:00,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:45:00,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:45:00,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:45:00,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:45:00,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:45:00,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:45:00,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:45:00,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:45:00,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:45:00,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:45:00,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:45:00,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:45:00,582 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:45:00,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-24 22:45:00,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e001a5a4/6505c58df53146a1984475470f05f765/FLAGd050be6da [2020-09-24 22:45:01,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:45:01,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-24 22:45:01,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e001a5a4/6505c58df53146a1984475470f05f765/FLAGd050be6da [2020-09-24 22:45:01,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e001a5a4/6505c58df53146a1984475470f05f765 [2020-09-24 22:45:01,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:45:01,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:45:01,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:45:01,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:45:01,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:45:01,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:45:01" (1/1) ... [2020-09-24 22:45:01,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768abc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:01, skipping insertion in model container [2020-09-24 22:45:01,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:45:01" (1/1) ... [2020-09-24 22:45:01,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:45:01,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:45:02,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:45:02,250 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:45:02,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:45:02,368 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:45:02,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02 WrapperNode [2020-09-24 22:45:02,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:45:02,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:45:02,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:45:02,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:45:02,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (1/1) ... [2020-09-24 22:45:02,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:45:02,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:45:02,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:45:02,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:45:02,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (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 [2020-09-24 22:45:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:45:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:45:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 22:45:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 22:45:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 22:45:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-24 22:45:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-24 22:45:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-24 22:45:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:45:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:45:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 22:45:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 22:45:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 22:45:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 22:45:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 22:45:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 22:45:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 22:45:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 22:45:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 22:45:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 22:45:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 22:45:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 22:45:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 22:45:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 22:45:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 22:45:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 22:45:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 22:45:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 22:45:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 22:45:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 22:45:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 22:45:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 22:45:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 22:45:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 22:45:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 22:45:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 22:45:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 22:45:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 22:45:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 22:45:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 22:45:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 22:45:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 22:45:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 22:45:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 22:45:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 22:45:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 22:45:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 22:45:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 22:45:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 22:45:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 22:45:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 22:45:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 22:45:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 22:45:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 22:45:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 22:45:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 22:45:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:45:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:45:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:45:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:45:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 22:45:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 22:45:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:45:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 22:45:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 22:45:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:45:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 22:45:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 22:45:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 22:45:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:45:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 22:45:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 22:45:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 22:45:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 22:45:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 22:45:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 22:45:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 22:45:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 22:45:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 22:45:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 22:45:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 22:45:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 22:45:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 22:45:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 22:45:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 22:45:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 22:45:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 22:45:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 22:45:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 22:45:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 22:45:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 22:45:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 22:45:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 22:45:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 22:45:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 22:45:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 22:45:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 22:45:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 22:45:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-24 22:45:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:45:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:45:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:45:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-24 22:45:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-24 22:45:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:45:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:45:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:45:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:45:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 22:45:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:45:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:45:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:45:02,890 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 22:45:03,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:45:03,191 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 22:45:03,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:45:03 BoogieIcfgContainer [2020-09-24 22:45:03,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:45:03,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:45:03,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:45:03,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:45:03,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:45:01" (1/3) ... [2020-09-24 22:45:03,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5884c560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:45:03, skipping insertion in model container [2020-09-24 22:45:03,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:02" (2/3) ... [2020-09-24 22:45:03,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5884c560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:45:03, skipping insertion in model container [2020-09-24 22:45:03,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:45:03" (3/3) ... [2020-09-24 22:45:03,207 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-24 22:45:03,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:45:03,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:45:03,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:45:03,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:45:03,278 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:45:03,278 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:45:03,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:45:03,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:45:03,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:45:03,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:45:03,279 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:45:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-24 22:45:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 22:45:03,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:03,315 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] [2020-09-24 22:45:03,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-24 22:45:03,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:03,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558671699] [2020-09-24 22:45:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:04,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:45:04,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-09-24 22:45:04,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:45:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:45:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:04,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:04,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:45:04,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:04,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:04,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:04,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:04,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558671699] [2020-09-24 22:45:04,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:04,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:04,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840125195] [2020-09-24 22:45:04,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:04,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:04,483 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-24 22:45:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:04,680 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-24 22:45:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:45:04,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-24 22:45:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:04,698 INFO L225 Difference]: With dead ends: 118 [2020-09-24 22:45:04,698 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 22:45:04,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:45:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 22:45:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-24 22:45:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 22:45:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-24 22:45:04,753 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-24 22:45:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:04,754 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-24 22:45:04,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-24 22:45:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 22:45:04,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:04,756 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] [2020-09-24 22:45:04,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:45:04,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-24 22:45:04,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:04,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753978786] [2020-09-24 22:45:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:45:05,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-09-24 22:45:05,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:45:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:45:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:05,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:05,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:45:05,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:05,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:05,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:05,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 22:45:05,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:45:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:05,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753978786] [2020-09-24 22:45:05,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:05,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:45:05,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407062157] [2020-09-24 22:45:05,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:05,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:05,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:05,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:05,803 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 9 states. [2020-09-24 22:45:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:06,243 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-24 22:45:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:45:06,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-24 22:45:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:06,246 INFO L225 Difference]: With dead ends: 124 [2020-09-24 22:45:06,246 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:45:06,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:45:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:45:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-09-24 22:45:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:45:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-24 22:45:06,267 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 27 [2020-09-24 22:45:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:06,267 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-24 22:45:06,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-24 22:45:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 22:45:06,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:06,269 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] [2020-09-24 22:45:06,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:45:06,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:06,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1632096868, now seen corresponding path program 1 times [2020-09-24 22:45:06,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:06,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367483235] [2020-09-24 22:45:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:45:07,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-09-24 22:45:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:45:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:45:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:07,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:07,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:07,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:45:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 22:45:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:45:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:07,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367483235] [2020-09-24 22:45:07,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:07,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:45:07,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570843485] [2020-09-24 22:45:07,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:45:07,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:45:07,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:45:07,303 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 8 states. [2020-09-24 22:45:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:07,684 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-09-24 22:45:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:45:07,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-09-24 22:45:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:07,686 INFO L225 Difference]: With dead ends: 104 [2020-09-24 22:45:07,687 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 22:45:07,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:45:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 22:45:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2020-09-24 22:45:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 22:45:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 22:45:07,697 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 39 [2020-09-24 22:45:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:07,698 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 22:45:07,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:45:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 22:45:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:45:07,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:07,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:07,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:45:07,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1675692718, now seen corresponding path program 1 times [2020-09-24 22:45:07,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:07,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594456982] [2020-09-24 22:45:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:45:12,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 22:45:12,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 22:45:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:45:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:45:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:12,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:12,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:45:12,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:45:12,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:12,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 22:45:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:12,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 22:45:12,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:45:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:13,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594456982] [2020-09-24 22:45:13,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:13,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:45:13,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620845991] [2020-09-24 22:45:13,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:45:13,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:45:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:13,068 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 10 states. [2020-09-24 22:45:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:13,673 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-09-24 22:45:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:45:13,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-24 22:45:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:13,678 INFO L225 Difference]: With dead ends: 99 [2020-09-24 22:45:13,678 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 22:45:13,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:45:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 22:45:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 76. [2020-09-24 22:45:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 22:45:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-24 22:45:13,689 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 57 [2020-09-24 22:45:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:13,689 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-24 22:45:13,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:45:13,689 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-24 22:45:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:45:13,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:13,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:13,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:45:13,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:13,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2027225329, now seen corresponding path program 1 times [2020-09-24 22:45:13,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:13,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447028192] [2020-09-24 22:45:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:18,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:45:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:45:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:45:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:45:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:45:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 22:45:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:18,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:18,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:18,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:18,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:18,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:45:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 22:45:19,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:45:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 22:45:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:19,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:45:19,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-24 22:45:19,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:45:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:19,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447028192] [2020-09-24 22:45:19,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:19,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:45:19,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527457172] [2020-09-24 22:45:19,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:45:19,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:19,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:45:19,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:45:19,964 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 18 states. [2020-09-24 22:45:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:21,243 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2020-09-24 22:45:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 22:45:21,244 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-24 22:45:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:21,245 INFO L225 Difference]: With dead ends: 128 [2020-09-24 22:45:21,245 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 22:45:21,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 22:45:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 22:45:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-24 22:45:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 22:45:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2020-09-24 22:45:21,257 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 58 [2020-09-24 22:45:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:21,257 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2020-09-24 22:45:21,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:45:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2020-09-24 22:45:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 22:45:21,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:21,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:21,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:45:21,261 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:21,262 INFO L82 PathProgramCache]: Analyzing trace with hash -576246568, now seen corresponding path program 1 times [2020-09-24 22:45:21,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:21,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835037614] [2020-09-24 22:45:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 22:45:22,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-09-24 22:45:22,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:45:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 22:45:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:22,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:22,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:45:22,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:22,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 22:45:22,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:45:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 22:45:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:45:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:45:22,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:45:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:22,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835037614] [2020-09-24 22:45:22,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:22,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:45:22,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823449338] [2020-09-24 22:45:22,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:45:22,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:22,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:45:22,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:22,857 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 13 states. [2020-09-24 22:45:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:23,456 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-09-24 22:45:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:45:23,457 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-09-24 22:45:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:23,460 INFO L225 Difference]: With dead ends: 108 [2020-09-24 22:45:23,460 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 22:45:23,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:45:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 22:45:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2020-09-24 22:45:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 22:45:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-09-24 22:45:23,472 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 71 [2020-09-24 22:45:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:23,473 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-09-24 22:45:23,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:45:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-09-24 22:45:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 22:45:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:23,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:23,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:45:23,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:23,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1080115579, now seen corresponding path program 1 times [2020-09-24 22:45:23,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:23,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176279592] [2020-09-24 22:45:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 22:45:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-09-24 22:45:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:45:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 22:45:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:24,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:24,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:45:24,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 22:45:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:45:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 22:45:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:24,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:45:24,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:45:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 22:45:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:45:24,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:24,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:45:24,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:45:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 22:45:24,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176279592] [2020-09-24 22:45:24,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:24,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:45:24,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4650320] [2020-09-24 22:45:24,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:45:24,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:24,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:45:24,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:24,681 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 13 states. [2020-09-24 22:45:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:25,121 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2020-09-24 22:45:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:45:25,122 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-24 22:45:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:25,124 INFO L225 Difference]: With dead ends: 158 [2020-09-24 22:45:25,124 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 22:45:25,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:45:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 22:45:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-09-24 22:45:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 22:45:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2020-09-24 22:45:25,136 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 76 [2020-09-24 22:45:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:25,137 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2020-09-24 22:45:25,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:45:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2020-09-24 22:45:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 22:45:25,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:25,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2020-09-24 22:45:25,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:45:25,140 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1382895989, now seen corresponding path program 2 times [2020-09-24 22:45:25,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:25,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607895621] [2020-09-24 22:45:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:27,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 22:45:30,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:45:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:45:30,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 22:45:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:45:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:45:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:30,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:30,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:30,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:30,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:31,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:45:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:45:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1703 [2020-09-24 22:45:31,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:45:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:45:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 22:45:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:32,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:32,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 22:45:32,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:45:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:32,529 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-09-24 22:45:32,778 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-09-24 22:45:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 22:45:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:32,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:45:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 22:45:32,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:45:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:33,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607895621] [2020-09-24 22:45:33,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:33,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 22:45:33,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456314219] [2020-09-24 22:45:33,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:45:33,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:33,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:45:33,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:45:33,243 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand 17 states. [2020-09-24 22:45:33,982 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-09-24 22:45:34,189 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 22:45:34,366 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-09-24 22:45:34,677 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-09-24 22:45:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:35,113 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-09-24 22:45:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:45:35,113 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-09-24 22:45:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:35,116 INFO L225 Difference]: With dead ends: 153 [2020-09-24 22:45:35,116 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 22:45:35,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2020-09-24 22:45:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 22:45:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-24 22:45:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 22:45:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-09-24 22:45:35,141 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 88 [2020-09-24 22:45:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:35,141 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-09-24 22:45:35,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:45:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-09-24 22:45:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 22:45:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:35,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:35,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:45:35,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:35,157 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-24 22:45:35,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:35,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527835622] [2020-09-24 22:45:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:40,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 22:45:40,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:45:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5487 [2020-09-24 22:45:40,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:45:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:45:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:45:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:40,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:45:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3855 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:45:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,134 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-09-24 22:45:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 22:45:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:45,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:45,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 22:45:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:45:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 22:45:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:45:45,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:45:45,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:45:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:45:45,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527835622] [2020-09-24 22:45:45,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:45,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:45:45,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510020897] [2020-09-24 22:45:45,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:45:45,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:45,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:45:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:45:45,644 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 18 states. [2020-09-24 22:45:46,103 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-09-24 22:45:46,446 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-09-24 22:45:46,724 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-09-24 22:45:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:47,714 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-09-24 22:45:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 22:45:47,714 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-09-24 22:45:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:47,716 INFO L225 Difference]: With dead ends: 121 [2020-09-24 22:45:47,716 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 22:45:47,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 22:45:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 22:45:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-09-24 22:45:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 22:45:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-09-24 22:45:47,726 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 89 [2020-09-24 22:45:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:47,726 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-09-24 22:45:47,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:45:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-09-24 22:45:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 22:45:47,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:47,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2020-09-24 22:45:47,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:45:47,729 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 2 times [2020-09-24 22:45:47,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:47,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012415884] [2020-09-24 22:45:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking...