/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:27:27,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:27:27,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:27:27,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:27:27,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:27:27,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:27:27,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:27:27,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:27:27,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:27:27,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:27:27,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:27:27,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:27:27,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:27:27,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:27:27,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:27:27,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:27:27,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:27:27,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:27:27,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:27:27,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:27:27,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:27:27,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:27:27,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:27:27,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:27:27,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:27:27,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:27:27,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:27:27,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:27:27,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:27:27,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:27:27,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:27:27,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:27:27,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:27:27,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:27:27,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:27:27,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:27:27,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:27:27,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:27:27,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:27:27,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:27:27,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:27:27,960 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 [2020-09-21 12:27:27,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:27:27,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:27:27,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:27:27,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:27:27,987 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:27:27,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:27:27,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:27:27,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:27:27,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:27:27,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:27:27,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:27:27,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:27:27,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:27:27,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:27:27,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:27:27,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:27:27,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:27:27,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:27:27,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:27:27,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:27:27,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:27:27,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:27,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:27:27,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:27:27,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:27:27,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:27:27,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:27:27,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:27:27,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:27:27,992 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:27:28,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:27:28,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:27:28,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:27:28,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:27:28,486 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:27:28,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-21 12:27:28,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/512506b43/3d006b6135894a7096ed630aa950e035/FLAG0cba9993c [2020-09-21 12:27:29,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:27:29,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-21 12:27:29,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/512506b43/3d006b6135894a7096ed630aa950e035/FLAG0cba9993c [2020-09-21 12:27:29,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/512506b43/3d006b6135894a7096ed630aa950e035 [2020-09-21 12:27:29,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:27:29,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:27:29,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:29,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:27:29,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:27:29,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:29" (1/1) ... [2020-09-21 12:27:29,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2a8928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:29, skipping insertion in model container [2020-09-21 12:27:29,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:29" (1/1) ... [2020-09-21 12:27:29,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:27:29,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:27:30,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:30,167 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:27:30,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:30,306 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:27:30,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30 WrapperNode [2020-09-21 12:27:30,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:30,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:27:30,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:27:30,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:27:30,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (1/1) ... [2020-09-21 12:27:30,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:27:30,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:27:30,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:27:30,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:27:30,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (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 [2020-09-21 12:27:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:27:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:27:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 12:27:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 12:27:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-21 12:27:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-21 12:27:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-21 12:27:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-21 12:27:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-21 12:27:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-21 12:27:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:27:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:27:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:27:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 12:27:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 12:27:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:27:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:27:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:27:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:27:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:27:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:27:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:27:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:27:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:27:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:27:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:27:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:27:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:27:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:27:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:27:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:27:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:27:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:27:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:27:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:27:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:27:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:27:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:27:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:27:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:27:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:27:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:27:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:27:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:27:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 12:27:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:27:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:27:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 12:27:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:27:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:27:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:27:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:27:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:27:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-21 12:27:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:27:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:27:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-21 12:27:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:27:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-21 12:27:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:27:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-21 12:27:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-21 12:27:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:27:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:27:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 12:27:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:27:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:27:30,948 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-21 12:27:31,261 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:27:31,262 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 12:27:31,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:31 BoogieIcfgContainer [2020-09-21 12:27:31,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:27:31,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:27:31,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:27:31,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:27:31,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:27:29" (1/3) ... [2020-09-21 12:27:31,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fcdc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:31, skipping insertion in model container [2020-09-21 12:27:31,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:30" (2/3) ... [2020-09-21 12:27:31,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fcdc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:31, skipping insertion in model container [2020-09-21 12:27:31,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:31" (3/3) ... [2020-09-21 12:27:31,277 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-21 12:27:31,288 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:27:31,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:27:31,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:27:31,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:27:31,349 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:27:31,349 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:27:31,349 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:27:31,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:27:31,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:27:31,350 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:27:31,350 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:27:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-21 12:27:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:27:31,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:31,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:31,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-09-21 12:27:31,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:31,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500884102] [2020-09-21 12:27:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:27:31,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:27:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-21 12:27:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-21 12:27:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:27:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:27:31,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:32,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:27:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:27:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:32,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:32,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:27:32,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:32,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:32,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:27:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:27:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:27:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:27:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:32,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:32,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:27:32,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:27:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:27:32,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500884102] [2020-09-21 12:27:32,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:32,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:32,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325980532] [2020-09-21 12:27:32,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:32,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:32,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:32,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:32,178 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-09-21 12:27:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:32,440 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-09-21 12:27:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:27:32,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-21 12:27:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:32,457 INFO L225 Difference]: With dead ends: 136 [2020-09-21 12:27:32,457 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 12:27:32,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 12:27:32,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-09-21 12:27:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-21 12:27:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-21 12:27:32,527 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-09-21 12:27:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:32,528 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-21 12:27:32,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-21 12:27:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-21 12:27:32,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:32,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:32,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:27:32,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:32,534 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-09-21 12:27:32,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:32,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692151540] [2020-09-21 12:27:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 12:27:33,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:33,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:27:33,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:27:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 12:27:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:27:33,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:33,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:33,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:27:33,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:33,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:27:33,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:33,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:27:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:33,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:27:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:27:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:33,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:33,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:33,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:33,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:27:33,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:33,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:33,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692151540] [2020-09-21 12:27:33,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:33,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:27:33,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440725232] [2020-09-21 12:27:33,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:27:33,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:33,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:27:33,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:33,826 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 9 states. [2020-09-21 12:27:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:34,199 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2020-09-21 12:27:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:27:34,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-21 12:27:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:34,202 INFO L225 Difference]: With dead ends: 109 [2020-09-21 12:27:34,202 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 12:27:34,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:27:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 12:27:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-09-21 12:27:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-21 12:27:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-09-21 12:27:34,220 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 44 [2020-09-21 12:27:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:34,221 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-09-21 12:27:34,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:27:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-09-21 12:27:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-21 12:27:34,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:34,223 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:34,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:27:34,223 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash 580201516, now seen corresponding path program 1 times [2020-09-21 12:27:34,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:34,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544522464] [2020-09-21 12:27:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 12:27:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:27:35,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:27:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:27:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:27:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:35,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:35,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:35,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:35,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:35,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:27:35,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:27:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:35,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:27:35,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:27:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:35,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:35,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:27:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:35,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544522464] [2020-09-21 12:27:35,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:35,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:27:35,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119561798] [2020-09-21 12:27:35,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:27:35,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:27:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:27:35,548 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 11 states. [2020-09-21 12:27:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:36,170 INFO L93 Difference]: Finished difference Result 132 states and 160 transitions. [2020-09-21 12:27:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:27:36,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-09-21 12:27:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:36,173 INFO L225 Difference]: With dead ends: 132 [2020-09-21 12:27:36,173 INFO L226 Difference]: Without dead ends: 87 [2020-09-21 12:27:36,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:27:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-21 12:27:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2020-09-21 12:27:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 12:27:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-09-21 12:27:36,188 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 44 [2020-09-21 12:27:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:36,188 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-09-21 12:27:36,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:27:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-09-21 12:27:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-21 12:27:36,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:36,190 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:36,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:27:36,191 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:36,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1108742226, now seen corresponding path program 1 times [2020-09-21 12:27:36,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:36,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433363670] [2020-09-21 12:27:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 12:27:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:27:37,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:27:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:27:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:27:37,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:37,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:27:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:27:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:37,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:27:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:37,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:27:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:27:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:37,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:27:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:37,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433363670] [2020-09-21 12:27:37,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:37,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:27:37,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005188754] [2020-09-21 12:27:37,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:27:37,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:37,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:27:37,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:27:37,604 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 11 states. [2020-09-21 12:27:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:38,373 INFO L93 Difference]: Finished difference Result 160 states and 204 transitions. [2020-09-21 12:27:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:27:38,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-09-21 12:27:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:38,376 INFO L225 Difference]: With dead ends: 160 [2020-09-21 12:27:38,377 INFO L226 Difference]: Without dead ends: 109 [2020-09-21 12:27:38,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:27:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-21 12:27:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2020-09-21 12:27:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-21 12:27:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2020-09-21 12:27:38,413 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 44 [2020-09-21 12:27:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:38,413 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2020-09-21 12:27:38,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:27:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2020-09-21 12:27:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:27:38,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:38,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:38,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:27:38,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:38,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1436804865, now seen corresponding path program 1 times [2020-09-21 12:27:38,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:38,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262183626] [2020-09-21 12:27:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:27:39,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:27:39,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:27:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:27:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:39,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:39,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:27:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:27:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:27:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:39,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:27:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:27:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:27:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:39,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:39,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 12:27:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:27:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:39,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:39,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:27:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:39,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262183626] [2020-09-21 12:27:39,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:39,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:27:39,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856634730] [2020-09-21 12:27:39,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:27:39,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:27:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:39,772 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand 12 states. [2020-09-21 12:27:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:40,362 INFO L93 Difference]: Finished difference Result 147 states and 181 transitions. [2020-09-21 12:27:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:27:40,363 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-09-21 12:27:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:40,364 INFO L225 Difference]: With dead ends: 147 [2020-09-21 12:27:40,365 INFO L226 Difference]: Without dead ends: 104 [2020-09-21 12:27:40,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-09-21 12:27:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-21 12:27:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2020-09-21 12:27:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-21 12:27:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2020-09-21 12:27:40,396 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 47 [2020-09-21 12:27:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:40,396 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2020-09-21 12:27:40,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:27:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2020-09-21 12:27:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-21 12:27:40,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:40,402 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:40,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:27:40,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:40,408 INFO L82 PathProgramCache]: Analyzing trace with hash -618929005, now seen corresponding path program 1 times [2020-09-21 12:27:40,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:40,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146290284] [2020-09-21 12:27:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:27:41,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:27:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:27:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:27:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:27:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 12:27:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:41,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:41,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:27:41,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:27:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:27:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:27:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:27:41,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:27:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:41,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:27:41,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:27:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:27:41,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146290284] [2020-09-21 12:27:41,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:41,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 12:27:41,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039594040] [2020-09-21 12:27:41,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:27:41,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:27:41,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:41,788 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand 12 states. [2020-09-21 12:27:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:42,384 INFO L93 Difference]: Finished difference Result 109 states and 139 transitions. [2020-09-21 12:27:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:27:42,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-09-21 12:27:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:42,387 INFO L225 Difference]: With dead ends: 109 [2020-09-21 12:27:42,387 INFO L226 Difference]: Without dead ends: 105 [2020-09-21 12:27:42,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:27:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-21 12:27:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2020-09-21 12:27:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 12:27:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2020-09-21 12:27:42,414 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 48 [2020-09-21 12:27:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:42,415 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2020-09-21 12:27:42,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:27:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2020-09-21 12:27:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-21 12:27:42,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:42,417 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:42,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:27:42,418 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash 293392093, now seen corresponding path program 1 times [2020-09-21 12:27:42,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:42,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242208032] [2020-09-21 12:27:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:43,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:27:43,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:27:43,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:27:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:27:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:27:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:43,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:43,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:43,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:43,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:43,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:43,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:43,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:27:43,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:43,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 12:27:43,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:27:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:43,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:43,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:27:43,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:27:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:43,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:43,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:27:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 12:27:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:27:43,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242208032] [2020-09-21 12:27:43,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:43,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:27:43,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744159640] [2020-09-21 12:27:43,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:27:43,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:43,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:27:43,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:43,806 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 12 states. [2020-09-21 12:27:44,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:44,316 INFO L93 Difference]: Finished difference Result 182 states and 231 transitions. [2020-09-21 12:27:44,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:27:44,316 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-09-21 12:27:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:44,318 INFO L225 Difference]: With dead ends: 182 [2020-09-21 12:27:44,318 INFO L226 Difference]: Without dead ends: 115 [2020-09-21 12:27:44,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:27:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-21 12:27:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2020-09-21 12:27:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 12:27:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2020-09-21 12:27:44,333 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 49 [2020-09-21 12:27:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:44,333 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2020-09-21 12:27:44,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:27:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2020-09-21 12:27:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:27:44,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:44,335 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-21 12:27:44,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:27:44,336 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:44,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1061888040, now seen corresponding path program 1 times [2020-09-21 12:27:44,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:44,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164052157] [2020-09-21 12:27:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-21 12:27:45,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:27:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:27:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:27:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:45,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:45,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:45,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:27:45,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:27:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:27:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:27:45,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-21 12:27:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:27:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 12:27:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:45,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:27:45,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:45,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:27:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:45,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:27:45,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 12:27:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 12:27:45,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164052157] [2020-09-21 12:27:45,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:45,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:27:45,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696120491] [2020-09-21 12:27:45,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:27:45,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:45,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:27:45,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:45,803 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand 12 states. [2020-09-21 12:27:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:46,596 INFO L93 Difference]: Finished difference Result 194 states and 248 transitions. [2020-09-21 12:27:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:27:46,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-21 12:27:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:46,598 INFO L225 Difference]: With dead ends: 194 [2020-09-21 12:27:46,598 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 12:27:46,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:27:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 12:27:46,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-09-21 12:27:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 12:27:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2020-09-21 12:27:46,613 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 52 [2020-09-21 12:27:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:46,613 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2020-09-21 12:27:46,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:27:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2020-09-21 12:27:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:27:46,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:46,614 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-21 12:27:46,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:27:46,615 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 2 times [2020-09-21 12:27:46,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:46,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616134871] [2020-09-21 12:27:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-21 12:27:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-09-21 12:27:47,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:27:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:27:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:27:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:47,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:47,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:47,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:47,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:47,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-21 12:27:47,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:27:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:27:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:27:47,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:27:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:47,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:47,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:27:47,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:47,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:47,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:47,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:27:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:27:47,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616134871] [2020-09-21 12:27:47,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:47,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 12:27:47,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764766585] [2020-09-21 12:27:47,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 12:27:47,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:47,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 12:27:47,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:27:47,885 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand 14 states. [2020-09-21 12:27:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:48,714 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2020-09-21 12:27:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:27:48,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-21 12:27:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:48,716 INFO L225 Difference]: With dead ends: 113 [2020-09-21 12:27:48,716 INFO L226 Difference]: Without dead ends: 109 [2020-09-21 12:27:48,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:27:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-21 12:27:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2020-09-21 12:27:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-21 12:27:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2020-09-21 12:27:48,742 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 53 [2020-09-21 12:27:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:48,743 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2020-09-21 12:27:48,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 12:27:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2020-09-21 12:27:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 12:27:48,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:48,746 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-21 12:27:48,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:27:48,746 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 3 times [2020-09-21 12:27:48,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:48,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178563015] [2020-09-21 12:27:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:48,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:49,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:49,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:49,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 12:27:49,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-21 12:27:49,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:27:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:27:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:49,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:49,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:49,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:49,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:50,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:50,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:27:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:27:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-21 12:27:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:27:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:27:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:50,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:27:50,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:27:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:50,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:27:50,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:50,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:27:50,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-21 12:27:50,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178563015] [2020-09-21 12:27:50,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:50,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 12:27:50,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353447150] [2020-09-21 12:27:50,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 12:27:50,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:50,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 12:27:50,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:27:50,436 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand 15 states. [2020-09-21 12:27:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:51,347 INFO L93 Difference]: Finished difference Result 143 states and 184 transitions. [2020-09-21 12:27:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:27:51,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-09-21 12:27:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:51,351 INFO L225 Difference]: With dead ends: 143 [2020-09-21 12:27:51,351 INFO L226 Difference]: Without dead ends: 139 [2020-09-21 12:27:51,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:27:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-21 12:27:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 111. [2020-09-21 12:27:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-21 12:27:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2020-09-21 12:27:51,382 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 54 [2020-09-21 12:27:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:51,382 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2020-09-21 12:27:51,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 12:27:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2020-09-21 12:27:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:27:51,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:51,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 12:27:51,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:27:51,386 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 4 times [2020-09-21 12:27:51,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:51,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754633390] [2020-09-21 12:27:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:52,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:52,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 12:27:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:27:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:27:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:27:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:27:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:52,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:52,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:52,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:52,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:52,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:52,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:52,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:52,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:52,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:52,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:52,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:53,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:53,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:27:53,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:53,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-21 12:27:53,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:53,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:53,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:53,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:27:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:27:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:53,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:53,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:53,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:53,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:27:53,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:53,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:27:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:27:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 12:27:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:27:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:27:53,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754633390] [2020-09-21 12:27:53,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:53,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:27:53,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870030132] [2020-09-21 12:27:53,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:27:53,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:27:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:27:53,612 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand 16 states. [2020-09-21 12:27:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:54,982 INFO L93 Difference]: Finished difference Result 158 states and 205 transitions. [2020-09-21 12:27:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:27:54,985 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-09-21 12:27:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:54,988 INFO L225 Difference]: With dead ends: 158 [2020-09-21 12:27:54,988 INFO L226 Difference]: Without dead ends: 154 [2020-09-21 12:27:54,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:27:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-21 12:27:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2020-09-21 12:27:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-21 12:27:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 184 transitions. [2020-09-21 12:27:55,010 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 184 transitions. Word has length 55 [2020-09-21 12:27:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:55,010 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 184 transitions. [2020-09-21 12:27:55,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:27:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 184 transitions. [2020-09-21 12:27:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 12:27:55,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:55,012 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-09-21 12:27:55,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:27:55,012 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1962899334, now seen corresponding path program 5 times [2020-09-21 12:27:55,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:55,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158997016] [2020-09-21 12:27:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:56,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 12:27:56,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:27:56,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:27:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:27:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:27:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:56,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:56,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:56,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:56,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:56,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:56,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:27:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-21 12:27:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:27:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:27:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:27:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:56,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:56,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:56,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:27:56,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:56,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:27:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:27:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:27:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:27:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 12:27:56,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158997016] [2020-09-21 12:27:56,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:56,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 12:27:56,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740455557] [2020-09-21 12:27:56,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 12:27:56,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 12:27:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:27:56,710 INFO L87 Difference]: Start difference. First operand 142 states and 184 transitions. Second operand 17 states. [2020-09-21 12:27:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:57,714 INFO L93 Difference]: Finished difference Result 158 states and 203 transitions. [2020-09-21 12:27:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:27:57,715 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-21 12:27:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:57,716 INFO L225 Difference]: With dead ends: 158 [2020-09-21 12:27:57,716 INFO L226 Difference]: Without dead ends: 148 [2020-09-21 12:27:57,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-09-21 12:27:57,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-21 12:27:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2020-09-21 12:27:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-21 12:27:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2020-09-21 12:27:57,731 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 56 [2020-09-21 12:27:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:57,732 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2020-09-21 12:27:57,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 12:27:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2020-09-21 12:27:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:27:57,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:57,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-21 12:27:57,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:27:57,734 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-09-21 12:27:57,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:57,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875612928] [2020-09-21 12:27:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:58,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:58,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:27:58,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:27:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:27:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:27:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:58,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:58,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:58,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:58,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:58,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:58,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:27:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:58,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:27:58,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 12:27:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:27:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-21 12:27:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:27:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:27:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:27:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-21 12:27:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:27:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:27:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 12:27:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:59,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:59,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 12:27:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:59,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 12:27:59,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875612928] [2020-09-21 12:27:59,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:59,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:27:59,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640188979] [2020-09-21 12:27:59,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:27:59,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:27:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:59,347 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand 12 states. [2020-09-21 12:28:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:00,226 INFO L93 Difference]: Finished difference Result 240 states and 320 transitions. [2020-09-21 12:28:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:28:00,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-21 12:28:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:00,229 INFO L225 Difference]: With dead ends: 240 [2020-09-21 12:28:00,229 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 12:28:00,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:28:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 12:28:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-09-21 12:28:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 12:28:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2020-09-21 12:28:00,249 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 57 [2020-09-21 12:28:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:00,250 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2020-09-21 12:28:00,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:28:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2020-09-21 12:28:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:28:00,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:00,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 12:28:00,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:28:00,255 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-09-21 12:28:00,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:00,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925438337] [2020-09-21 12:28:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:28:00,293 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:28:00,293 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:28:00,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:28:00,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:28:00 BoogieIcfgContainer [2020-09-21 12:28:00,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:28:00,342 INFO L168 Benchmark]: Toolchain (without parser) took 30849.78 ms. Allocated memory was 139.5 MB in the beginning and 481.3 MB in the end (delta: 341.8 MB). Free memory was 101.5 MB in the beginning and 287.5 MB in the end (delta: -186.0 MB). Peak memory consumption was 155.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:28:00,343 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:28:00,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.42 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 166.1 MB in the end (delta: -65.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:28:00,345 INFO L168 Benchmark]: Boogie Preprocessor took 84.50 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 162.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:28:00,356 INFO L168 Benchmark]: RCFGBuilder took 874.98 ms. Allocated memory is still 202.9 MB. Free memory was 162.7 MB in the beginning and 111.3 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:28:00,359 INFO L168 Benchmark]: TraceAbstraction took 29069.38 ms. Allocated memory was 202.9 MB in the beginning and 481.3 MB in the end (delta: 278.4 MB). Free memory was 110.6 MB in the beginning and 287.5 MB in the end (delta: -176.9 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:28:00,364 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 806.42 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 166.1 MB in the end (delta: -65.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.50 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 162.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 874.98 ms. Allocated memory is still 202.9 MB. Free memory was 162.7 MB in the beginning and 111.3 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29069.38 ms. Allocated memory was 202.9 MB in the beginning and 481.3 MB in the end (delta: 278.4 MB). Free memory was 110.6 MB in the beginning and 287.5 MB in the end (delta: -176.9 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.9s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 765 SDtfs, 1063 SDslu, 3995 SDs, 0 SdLazy, 5020 SolverSat, 461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 206 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 697 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 301370 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 101/178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...