/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:40:19,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:40:19,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:40:19,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:40:19,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:40:19,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:40:19,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:40:19,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:40:19,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:40:19,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:40:19,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:40:19,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:40:19,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:40:19,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:40:19,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:40:19,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:40:19,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:40:19,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:40:19,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:40:19,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:40:19,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:40:19,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:40:19,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:40:19,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:40:19,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:40:19,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:40:19,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:40:19,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:40:19,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:40:19,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:40:19,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:40:19,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:40:19,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:40:19,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:40:19,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:40:19,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:40:19,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:40:19,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:40:19,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:40:19,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:40:19,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:40:19,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:40:19,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:40:19,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:40:19,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:40:19,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:40:19,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:40:19,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:40:19,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:40:19,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:40:19,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:40:19,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:40:19,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:40:19,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:40:19,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:40:19,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:40:19,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:40:19,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:40:19,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:40:19,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:40:19,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:40:19,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:40:19,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:40:19,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:40:19,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:40:19,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:40:19,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:40:19,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:40:19,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:40:19,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:40:19,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:40:19,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:40:19,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:40:19,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:40:19,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:40:19,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:40:19,881 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:40:19,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2020-10-14 23:40:19,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e890e6664/70dbba8d808548519872099b824f6509/FLAG54e8133d6 [2020-10-14 23:40:20,474 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:40:20,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2020-10-14 23:40:20,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e890e6664/70dbba8d808548519872099b824f6509/FLAG54e8133d6 [2020-10-14 23:40:20,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e890e6664/70dbba8d808548519872099b824f6509 [2020-10-14 23:40:20,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:40:20,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:40:20,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:40:20,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:40:20,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:40:20,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:40:20" (1/1) ... [2020-10-14 23:40:20,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dff57b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:20, skipping insertion in model container [2020-10-14 23:40:20,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:40:20" (1/1) ... [2020-10-14 23:40:20,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:40:20,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:40:21,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:40:21,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:40:21,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:40:21,363 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:40:21,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21 WrapperNode [2020-10-14 23:40:21,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:40:21,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:40:21,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:40:21,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:40:21,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... [2020-10-14 23:40:21,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:40:21,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:40:21,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:40:21,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:40:21,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:40:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:40:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:40:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:40:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:40:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:40:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:40:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-14 23:40:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_last [2020-10-14 23:40:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:40:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:40:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:40:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:40:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:40:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:40:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:40:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:40:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:40:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:40:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:40:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:40:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:40:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:40:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:40:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:40:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:40:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:40:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:40:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:40:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:40:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:40:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:40:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:40:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:40:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:40:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:40:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:40:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:40:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:40:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:40:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:40:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:40:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:40:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:40:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:40:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:40:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:40:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:40:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:40:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:40:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:40:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:40:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:40:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:40:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:40:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:40:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:40:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:40:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:40:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:40:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:40:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:40:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:40:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:40:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:40:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:40:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:40:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-14 23:40:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_last [2020-10-14 23:40:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:40:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:40:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:40:21,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:40:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:40:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:40:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:40:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:40:21,862 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:40:22,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:40:22,035 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 23:40:22,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:40:22 BoogieIcfgContainer [2020-10-14 23:40:22,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:40:22,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:40:22,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:40:22,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:40:22,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:40:20" (1/3) ... [2020-10-14 23:40:22,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616778e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:40:22, skipping insertion in model container [2020-10-14 23:40:22,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:21" (2/3) ... [2020-10-14 23:40:22,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616778e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:40:22, skipping insertion in model container [2020-10-14 23:40:22,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:40:22" (3/3) ... [2020-10-14 23:40:22,047 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2020-10-14 23:40:22,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:40:22,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:40:22,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:40:22,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:40:22,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:40:22,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:40:22,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:40:22,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:40:22,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:40:22,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:40:22,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:40:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-14 23:40:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:40:22,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:22,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:22,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1597421219, now seen corresponding path program 1 times [2020-10-14 23:40:22,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:22,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810599225] [2020-10-14 23:40:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:22,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:22,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:40:22,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 23:40:22,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:22,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 23:40:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 35 [2020-10-14 23:40:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:22,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:22,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:40:22,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:22,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:22,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:40:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:40:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:22,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:22,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:22,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:40:22,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:22,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:22,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:22,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810599225] [2020-10-14 23:40:22,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:40:22,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:40:22,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701985886] [2020-10-14 23:40:22,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:40:22,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:40:22,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:40:22,772 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-14 23:40:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:22,953 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2020-10-14 23:40:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:40:22,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 23:40:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:22,964 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:40:22,964 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 23:40:22,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:40:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 23:40:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 23:40:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:40:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-14 23:40:23,015 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2020-10-14 23:40:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:23,017 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-14 23:40:23,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:40:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-14 23:40:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:40:23,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:23,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:23,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:40:23,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash 657162430, now seen corresponding path program 1 times [2020-10-14 23:40:23,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:23,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704978997] [2020-10-14 23:40:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:40:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 23:40:23,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:23,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:40:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:40:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:23,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:40:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:23,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:23,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:23,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:23,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 23:40:23,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:23,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:23,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:40:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:23,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:23,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:23,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704978997] [2020-10-14 23:40:23,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:40:23,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:40:23,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103132929] [2020-10-14 23:40:23,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:40:23,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:23,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:40:23,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:40:23,653 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 6 states. [2020-10-14 23:40:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:23,845 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-10-14 23:40:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:40:23,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-14 23:40:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:23,847 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:40:23,847 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:40:23,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:40:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:40:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-14 23:40:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:40:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-14 23:40:23,859 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2020-10-14 23:40:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:23,859 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-14 23:40:23,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:40:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-14 23:40:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:40:23,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:23,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:23,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:40:23,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:23,862 INFO L82 PathProgramCache]: Analyzing trace with hash 300566781, now seen corresponding path program 1 times [2020-10-14 23:40:23,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:23,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557897352] [2020-10-14 23:40:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:24,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:40:24,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-14 23:40:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:24,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:40:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:24,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:24,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:24,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:24,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:24,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:24,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:40:24,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:24,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:24,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:24,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:24,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:40:24,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:24,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:24,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 23:40:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:24,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:40:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:24,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:40:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:24,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557897352] [2020-10-14 23:40:24,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:24,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:40:24,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734803064] [2020-10-14 23:40:24,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:40:24,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:24,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:40:24,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:40:24,833 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-14 23:40:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:25,072 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-14 23:40:25,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:40:25,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-14 23:40:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:25,075 INFO L225 Difference]: With dead ends: 47 [2020-10-14 23:40:25,075 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 23:40:25,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:40:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 23:40:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-14 23:40:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:40:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-14 23:40:25,085 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 34 [2020-10-14 23:40:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:25,085 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-14 23:40:25,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:40:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-14 23:40:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:40:25,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:25,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:25,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:40:25,088 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1997999740, now seen corresponding path program 2 times [2020-10-14 23:40:25,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:25,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750273877] [2020-10-14 23:40:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:40:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:40:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-14 23:40:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:40:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:40:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:27,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:27,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:27,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:40:27,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:27,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:27,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:40:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:40:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:27,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 23:40:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:40:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:40:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:40:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:40:27,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 23:40:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:40:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:40:27,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750273877] [2020-10-14 23:40:27,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:40:27,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 23:40:27,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952977752] [2020-10-14 23:40:27,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:40:27,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:27,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:40:27,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:40:27,681 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 10 states. [2020-10-14 23:40:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:27,961 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-14 23:40:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:40:27,961 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-14 23:40:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:27,963 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:40:27,963 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:40:27,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:40:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:40:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-14 23:40:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:40:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-14 23:40:27,979 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 44 [2020-10-14 23:40:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:27,980 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-14 23:40:27,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:40:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-14 23:40:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:40:27,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:27,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:27,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:40:27,983 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1438798796, now seen corresponding path program 1 times [2020-10-14 23:40:27,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:27,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810041600] [2020-10-14 23:40:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:40:33,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:40:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 23:40:33,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:40:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:40:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:40:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:33,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:33,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 23:40:33,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:40:33,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:40:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:33,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:40:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:33,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:40:33,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:40:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 23:40:33,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:40:33,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 23:40:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:33,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:40:33,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:40:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:40:33,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810041600] [2020-10-14 23:40:33,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:33,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:40:33,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093564558] [2020-10-14 23:40:33,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:40:33,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:33,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:40:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:40:33,880 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 20 states. [2020-10-14 23:40:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:34,541 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2020-10-14 23:40:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:40:34,543 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-14 23:40:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:34,548 INFO L225 Difference]: With dead ends: 82 [2020-10-14 23:40:34,549 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:40:34,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:40:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:40:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-14 23:40:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:40:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-14 23:40:34,571 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 52 [2020-10-14 23:40:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:34,574 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-14 23:40:34,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:40:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-14 23:40:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:40:34,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:34,577 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:34,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:40:34,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash -452029489, now seen corresponding path program 1 times [2020-10-14 23:40:34,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:34,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330230797] [2020-10-14 23:40:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:38,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:39,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:39,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:40:39,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:40:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:40:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:39,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:40:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:40:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:40:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:39,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:39,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:39,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:39,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:39,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:39,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 23:40:39,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:39,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:40:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:40:39,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:40,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:40,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:40,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:40,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:40:40,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:40,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:40,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:40,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:40,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:40,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:40:40,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:40,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:40:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:40:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:40:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 23:40:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:40,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:40:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:40,871 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2020-10-14 23:40:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:40:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:40,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:40,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:40:40,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:40,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:40:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:40:41,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330230797] [2020-10-14 23:40:41,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:41,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:40:41,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007223460] [2020-10-14 23:40:41,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:40:41,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:41,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:40:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:40:41,093 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 25 states. [2020-10-14 23:40:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:42,326 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2020-10-14 23:40:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:40:42,328 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 54 [2020-10-14 23:40:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:42,329 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:40:42,329 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:40:42,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:40:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:40:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-14 23:40:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:40:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-10-14 23:40:42,345 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 54 [2020-10-14 23:40:42,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:42,346 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-10-14 23:40:42,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:40:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-10-14 23:40:42,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:40:42,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:42,348 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:42,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:40:42,348 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:42,349 INFO L82 PathProgramCache]: Analyzing trace with hash -315174230, now seen corresponding path program 2 times [2020-10-14 23:40:42,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:42,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447364762] [2020-10-14 23:40:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:43,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:47,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:40:47,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:40:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:40:47,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:47,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:40:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:40:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:40:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:47,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:47,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:47,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:47,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:47,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:47,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:47,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 23:40:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:47,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:40:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:40:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:47,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:47,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:40:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:40:47,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:47,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:40:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:48,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:40:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:40:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 23:40:48,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:48,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:40:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:48,379 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-14 23:40:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:40:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:40:48,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:40:48,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:48,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:40:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:40:48,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447364762] [2020-10-14 23:40:48,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:48,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:40:48,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963785812] [2020-10-14 23:40:48,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:40:48,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:48,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:40:48,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:40:48,623 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 26 states. [2020-10-14 23:40:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:49,976 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2020-10-14 23:40:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:40:49,977 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 56 [2020-10-14 23:40:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:49,978 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:40:49,978 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 23:40:49,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:40:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 23:40:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2020-10-14 23:40:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 23:40:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-10-14 23:40:49,995 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 56 [2020-10-14 23:40:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:49,995 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-10-14 23:40:49,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:40:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-10-14 23:40:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:40:49,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:49,997 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:49,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:40:49,998 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:49,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2120470882, now seen corresponding path program 1 times [2020-10-14 23:40:49,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:49,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354791938] [2020-10-14 23:40:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:40:50,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 23:40:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:40:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 23:40:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:40:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:50,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:50,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:40:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:50,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:50,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:50,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:40:50,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:50,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:40:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 23:40:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:50,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 23:40:50,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354791938] [2020-10-14 23:40:50,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:40:50,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 23:40:50,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391530651] [2020-10-14 23:40:50,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:40:50,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:50,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:40:50,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:40:50,297 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 9 states. [2020-10-14 23:40:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:50,598 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2020-10-14 23:40:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:40:50,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 23:40:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:50,600 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:40:50,600 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 23:40:50,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:40:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 23:40:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2020-10-14 23:40:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:40:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-14 23:40:50,608 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 57 [2020-10-14 23:40:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:50,609 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-14 23:40:50,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:40:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-14 23:40:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:40:50,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:50,610 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:50,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:40:50,611 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1450863914, now seen corresponding path program 1 times [2020-10-14 23:40:50,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:50,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324626657] [2020-10-14 23:40:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:40:51,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-14 23:40:51,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:40:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 23:40:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:40:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:51,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:51,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:51,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:51,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:51,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:40:51,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:51,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:51,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:40:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:51,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:40:51,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:40:51,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:40:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:40:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 23:40:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:40:51,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324626657] [2020-10-14 23:40:51,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:51,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:40:51,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027023890] [2020-10-14 23:40:51,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:40:51,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:40:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:40:51,797 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 12 states. [2020-10-14 23:40:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:52,373 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-14 23:40:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:40:52,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-14 23:40:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:52,374 INFO L225 Difference]: With dead ends: 82 [2020-10-14 23:40:52,375 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:40:52,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:40:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:40:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-14 23:40:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:40:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-14 23:40:52,383 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 62 [2020-10-14 23:40:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:52,383 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-14 23:40:52,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:40:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-14 23:40:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:40:52,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:52,384 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:52,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:40:52,385 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1060298193, now seen corresponding path program 1 times [2020-10-14 23:40:52,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:52,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670793148] [2020-10-14 23:40:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:40:57,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 23:40:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:40:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:40:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:40:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:40:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:57,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:40:57,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:40:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:40:57,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:57,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:57,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:40:57,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:40:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:40:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:57,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:40:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 23:40:57,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:40:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:58,226 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 36 [2020-10-14 23:40:58,420 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-14 23:40:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 23:40:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:58,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:58,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:40:58,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:40:58,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:58,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:40:58,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670793148] [2020-10-14 23:40:58,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:58,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:40:58,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642411138] [2020-10-14 23:40:58,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:40:58,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:40:58,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:40:58,749 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 23 states. [2020-10-14 23:40:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:59,892 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2020-10-14 23:40:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:40:59,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-10-14 23:40:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:59,894 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:40:59,894 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:40:59,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:40:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:40:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-10-14 23:40:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:40:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-14 23:40:59,917 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 64 [2020-10-14 23:40:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:59,918 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-14 23:40:59,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:40:59,918 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-14 23:40:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:40:59,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:59,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:59,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:40:59,921 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:59,922 INFO L82 PathProgramCache]: Analyzing trace with hash 515462668, now seen corresponding path program 2 times [2020-10-14 23:40:59,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:59,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709690838] [2020-10-14 23:40:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:41:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:41:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:05,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:05,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:05,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:05,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:41:05,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:05,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:41:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:05,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:05,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:05,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:05,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:05,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:05,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:05,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:41:05,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:05,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:41:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:05,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:05,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:41:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 23:41:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:05,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:41:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:41:05,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709690838] [2020-10-14 23:41:05,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:05,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:41:05,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545276514] [2020-10-14 23:41:05,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:41:05,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:05,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:41:05,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:41:05,887 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 19 states. [2020-10-14 23:41:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:07,862 INFO L93 Difference]: Finished difference Result 165 states and 200 transitions. [2020-10-14 23:41:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:41:07,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-10-14 23:41:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:07,864 INFO L225 Difference]: With dead ends: 165 [2020-10-14 23:41:07,865 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:41:07,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:41:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:41:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-14 23:41:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:41:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2020-10-14 23:41:07,878 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 66 [2020-10-14 23:41:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:07,879 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2020-10-14 23:41:07,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:41:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2020-10-14 23:41:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:41:07,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:07,880 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:07,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:41:07,881 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:07,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1714828524, now seen corresponding path program 3 times [2020-10-14 23:41:07,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:07,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339049191] [2020-10-14 23:41:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:12,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:12,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:41:12,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 23:41:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:41:12,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:12,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:41:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:41:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:13,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:13,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:13,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:13,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:13,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 23:41:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:13,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:41:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:13,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:13,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:41:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:13,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:41:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:41:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:41:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 23:41:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:14,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:14,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:14,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:14,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:41:14,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:14,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:41:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:41:14,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339049191] [2020-10-14 23:41:14,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:14,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:41:14,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772265156] [2020-10-14 23:41:14,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:41:14,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:14,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:41:14,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:41:14,468 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand 19 states. [2020-10-14 23:41:15,214 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-14 23:41:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:15,568 INFO L93 Difference]: Finished difference Result 157 states and 191 transitions. [2020-10-14 23:41:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:41:15,568 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-10-14 23:41:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:15,570 INFO L225 Difference]: With dead ends: 157 [2020-10-14 23:41:15,570 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 23:41:15,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:41:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 23:41:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2020-10-14 23:41:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 23:41:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-14 23:41:15,584 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 66 [2020-10-14 23:41:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:15,585 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-14 23:41:15,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:41:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-14 23:41:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:41:15,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:15,586 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:15,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:41:15,586 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:15,587 INFO L82 PathProgramCache]: Analyzing trace with hash -641715897, now seen corresponding path program 4 times [2020-10-14 23:41:15,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:15,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27672181] [2020-10-14 23:41:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:41:20,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 23:41:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:41:20,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:41:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:41:20,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:20,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:20,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:41:20,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:41:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:20,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:20,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:41:20,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:20,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:20,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:41:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:41:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:22,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:41:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:41:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:22,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:41:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:41:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 23:41:22,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27672181] [2020-10-14 23:41:22,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:22,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:41:22,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634986987] [2020-10-14 23:41:22,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:41:22,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:22,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:41:22,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:41:22,812 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 22 states. [2020-10-14 23:41:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:24,181 INFO L93 Difference]: Finished difference Result 157 states and 193 transitions. [2020-10-14 23:41:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:41:24,183 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2020-10-14 23:41:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:24,184 INFO L225 Difference]: With dead ends: 157 [2020-10-14 23:41:24,184 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 23:41:24,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:41:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 23:41:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2020-10-14 23:41:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 23:41:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-14 23:41:24,197 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 68 [2020-10-14 23:41:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:24,197 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-14 23:41:24,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:41:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-14 23:41:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:41:24,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:24,199 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:24,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:41:24,199 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:24,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:24,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2125689278, now seen corresponding path program 5 times [2020-10-14 23:41:24,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:24,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306160532] [2020-10-14 23:41:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:24,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:27,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:41:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:41:29,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:29,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:29,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:29,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:29,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:29,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:29,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:29,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:29,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:41:29,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:29,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:29,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:41:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:29,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:41:29,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:29,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:41:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:30,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:30,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:41:30,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:41:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 23:41:30,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:30,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:41:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:41:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:30,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 23:41:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:30,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:30,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:41:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:30,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:41:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:41:30,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306160532] [2020-10-14 23:41:30,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:30,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:41:30,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331057408] [2020-10-14 23:41:30,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:41:30,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:41:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:41:30,789 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 24 states. [2020-10-14 23:41:32,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:32,559 INFO L93 Difference]: Finished difference Result 177 states and 218 transitions. [2020-10-14 23:41:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:41:32,560 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 70 [2020-10-14 23:41:32,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:32,561 INFO L225 Difference]: With dead ends: 177 [2020-10-14 23:41:32,561 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 23:41:32,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:41:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 23:41:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2020-10-14 23:41:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 23:41:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2020-10-14 23:41:32,576 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 70 [2020-10-14 23:41:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:32,576 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2020-10-14 23:41:32,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:41:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2020-10-14 23:41:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 23:41:32,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:32,578 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:32,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:41:32,578 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:32,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1521308669, now seen corresponding path program 6 times [2020-10-14 23:41:32,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:32,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581784381] [2020-10-14 23:41:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:37,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:41:37,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 23:41:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 23:41:37,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:37,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:41:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:41:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:37,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:37,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:37,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:41:37,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:37,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:41:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:37,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:37,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:41:37,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:37,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:41:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:37,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:39,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:39,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:41:39,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 23:41:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-14 23:41:39,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:39,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:41:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:41:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 23:41:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:39,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:39,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:39,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:41:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:39,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:41:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:41:39,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581784381] [2020-10-14 23:41:39,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:39,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:41:39,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480080609] [2020-10-14 23:41:39,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:41:39,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:41:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:41:39,462 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand 18 states. [2020-10-14 23:41:40,621 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-14 23:41:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:40,687 INFO L93 Difference]: Finished difference Result 176 states and 217 transitions. [2020-10-14 23:41:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:41:40,687 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 72 [2020-10-14 23:41:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:40,689 INFO L225 Difference]: With dead ends: 176 [2020-10-14 23:41:40,689 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 23:41:40,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:41:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 23:41:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2020-10-14 23:41:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:41:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2020-10-14 23:41:40,703 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 72 [2020-10-14 23:41:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:40,703 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2020-10-14 23:41:40,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:41:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2020-10-14 23:41:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:41:40,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:40,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:40,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:41:40,705 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:40,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1878894140, now seen corresponding path program 7 times [2020-10-14 23:41:40,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:40,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497462859] [2020-10-14 23:41:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:45,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:45,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:41:45,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 23:41:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:41:45,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:45,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:41:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:41:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:45,886 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-10-14 23:41:46,047 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-14 23:41:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:46,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:46,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:46,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:46,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:41:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:46,806 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 31 [2020-10-14 23:41:46,986 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-14 23:41:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:41:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:46,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:47,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:47,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:47,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:41:47,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:47,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:41:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:47,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:47,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:41:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:41:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:47,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:47,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:47,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:41:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:41:47,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:47,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:41:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:41:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:47,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:41:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:41:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:47,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:41:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:41:47,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497462859] [2020-10-14 23:41:47,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:47,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:41:47,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601119292] [2020-10-14 23:41:47,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:41:47,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:41:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:41:47,991 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand 26 states. [2020-10-14 23:41:49,311 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-14 23:41:49,481 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2020-10-14 23:41:49,656 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-14 23:41:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:49,975 INFO L93 Difference]: Finished difference Result 179 states and 223 transitions. [2020-10-14 23:41:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:41:49,975 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 74 [2020-10-14 23:41:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:49,977 INFO L225 Difference]: With dead ends: 179 [2020-10-14 23:41:49,978 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 23:41:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:41:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 23:41:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2020-10-14 23:41:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 23:41:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 141 transitions. [2020-10-14 23:41:49,992 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 141 transitions. Word has length 74 [2020-10-14 23:41:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:49,993 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 141 transitions. [2020-10-14 23:41:49,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:41:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 141 transitions. [2020-10-14 23:41:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:41:49,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:49,995 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:49,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:41:49,995 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:49,995 INFO L82 PathProgramCache]: Analyzing trace with hash -679528284, now seen corresponding path program 8 times [2020-10-14 23:41:49,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:49,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773751671] [2020-10-14 23:41:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:41:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:41:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 23:41:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:41:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:41:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:41:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:50,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:50,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:41:50,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 23:41:50,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:41:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:41:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:41:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:41:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:41:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:41:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:50,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:41:50,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:41:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:41:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:50,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:41:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:50,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:41:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 23:41:50,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773751671] [2020-10-14 23:41:50,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:50,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:41:50,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644611316] [2020-10-14 23:41:50,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:41:50,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:50,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:41:50,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:41:50,599 INFO L87 Difference]: Start difference. First operand 113 states and 141 transitions. Second operand 12 states. [2020-10-14 23:41:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:51,021 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2020-10-14 23:41:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:41:51,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-14 23:41:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:51,030 INFO L225 Difference]: With dead ends: 133 [2020-10-14 23:41:51,030 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 23:41:51,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:41:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 23:41:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2020-10-14 23:41:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 23:41:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2020-10-14 23:41:51,065 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 74 [2020-10-14 23:41:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:51,066 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2020-10-14 23:41:51,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:41:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2020-10-14 23:41:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:41:51,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:51,068 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:51,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:41:51,069 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:51,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2054994808, now seen corresponding path program 9 times [2020-10-14 23:41:51,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:51,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146922416] [2020-10-14 23:41:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:51,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:52,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:41:56,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:41:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:41:56,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:56,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:56,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:56,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:56,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:56,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:56,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:41:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:56,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:41:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:56,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:56,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:41:56,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:56,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:41:56,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:56,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:41:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:41:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-14 23:41:57,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:57,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:41:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:41:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:41:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:57,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:57,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:41:57,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:41:57,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:57,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:41:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 23:41:57,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146922416] [2020-10-14 23:41:57,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:57,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:41:57,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892825328] [2020-10-14 23:41:57,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:41:57,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:57,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:41:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:41:57,563 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand 20 states. [2020-10-14 23:41:58,295 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-14 23:41:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:58,668 INFO L93 Difference]: Finished difference Result 196 states and 249 transitions. [2020-10-14 23:41:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:41:58,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-14 23:41:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:58,670 INFO L225 Difference]: With dead ends: 196 [2020-10-14 23:41:58,670 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:41:58,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:41:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:41:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2020-10-14 23:41:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 23:41:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2020-10-14 23:41:58,691 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 74 [2020-10-14 23:41:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:58,692 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2020-10-14 23:41:58,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:41:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2020-10-14 23:41:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:41:58,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:58,693 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:41:58,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:41:58,694 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1164898616, now seen corresponding path program 10 times [2020-10-14 23:41:58,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:58,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519371410] [2020-10-14 23:41:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:59,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:42:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:42:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:42:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:42:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:03,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:03,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:42:03,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:42:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:04,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:42:04,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:42:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-14 23:42:04,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:04,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:04,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:42:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:04,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:04,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:04,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:04,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:42:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 23:42:04,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519371410] [2020-10-14 23:42:04,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:04,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:42:04,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951287649] [2020-10-14 23:42:04,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:42:04,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:04,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:42:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:42:04,670 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand 14 states. [2020-10-14 23:42:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:05,197 INFO L93 Difference]: Finished difference Result 195 states and 247 transitions. [2020-10-14 23:42:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:42:05,198 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2020-10-14 23:42:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:05,199 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:42:05,199 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 23:42:05,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:42:05,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 23:42:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2020-10-14 23:42:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 23:42:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2020-10-14 23:42:05,215 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 74 [2020-10-14 23:42:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:05,215 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2020-10-14 23:42:05,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:42:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2020-10-14 23:42:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 23:42:05,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:05,217 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:05,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:42:05,218 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:05,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:05,218 INFO L82 PathProgramCache]: Analyzing trace with hash -898515157, now seen corresponding path program 11 times [2020-10-14 23:42:05,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:05,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328336000] [2020-10-14 23:42:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 23:42:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 23:42:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 23:42:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:10,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:42:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:42:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:42:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:15,459 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 531 DAG size of output: 23 [2020-10-14 23:42:20,052 WARN L193 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 535 DAG size of output: 27 [2020-10-14 23:42:20,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:20,434 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2020-10-14 23:42:20,740 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 35 [2020-10-14 23:42:20,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:20,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:20,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:42:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:20,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:42:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:42:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:42:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:42:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 23:42:21,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:21,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:42:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 23:42:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:22,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:22,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:22,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:22,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:42:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 30 proven. 72 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 23:42:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328336000] [2020-10-14 23:42:22,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:22,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:42:22,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866006800] [2020-10-14 23:42:22,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:42:22,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:42:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:42:22,256 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand 29 states. [2020-10-14 23:42:23,657 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-14 23:42:23,862 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-10-14 23:42:24,029 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-14 23:42:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:24,368 INFO L93 Difference]: Finished difference Result 167 states and 209 transitions. [2020-10-14 23:42:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:42:24,369 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 93 [2020-10-14 23:42:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:24,370 INFO L225 Difference]: With dead ends: 167 [2020-10-14 23:42:24,370 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 23:42:24,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=220, Invalid=1760, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:42:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 23:42:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2020-10-14 23:42:24,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 23:42:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2020-10-14 23:42:24,393 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 93 [2020-10-14 23:42:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:24,395 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2020-10-14 23:42:24,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:42:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2020-10-14 23:42:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 23:42:24,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:24,399 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:42:24,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:42:24,399 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash 300850699, now seen corresponding path program 12 times [2020-10-14 23:42:24,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:24,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056752493] [2020-10-14 23:42:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 23:42:29,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 23:42:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:42:29,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:42:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:42:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 23:42:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:29,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:29,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:29,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:29,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:29,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:29,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:42:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:42:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:42:29,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:42:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:30,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:42:30,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:42:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:42:30,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:42:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:30,544 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 43 [2020-10-14 23:42:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:42:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:42:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 23:42:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 23:42:30,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056752493] [2020-10-14 23:42:30,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:30,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:42:30,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800023484] [2020-10-14 23:42:30,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:42:30,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:30,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:42:30,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:42:30,959 INFO L87 Difference]: Start difference. First operand 104 states and 133 transitions. Second operand 30 states. [2020-10-14 23:42:32,427 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-14 23:42:33,692 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-10-14 23:42:34,235 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-14 23:42:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:34,373 INFO L93 Difference]: Finished difference Result 256 states and 329 transitions. [2020-10-14 23:42:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 23:42:34,374 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 93 [2020-10-14 23:42:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:34,376 INFO L225 Difference]: With dead ends: 256 [2020-10-14 23:42:34,376 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:42:34,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=421, Invalid=3361, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 23:42:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:42:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 155. [2020-10-14 23:42:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 23:42:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 201 transitions. [2020-10-14 23:42:34,402 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 201 transitions. Word has length 93 [2020-10-14 23:42:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:34,403 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 201 transitions. [2020-10-14 23:42:34,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:42:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 201 transitions. [2020-10-14 23:42:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 23:42:34,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:34,405 INFO L422 BasicCegarLoop]: trace histogram [9, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:42:34,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:42:34,406 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash 2030227110, now seen corresponding path program 13 times [2020-10-14 23:42:34,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:34,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823366144] [2020-10-14 23:42:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 23:42:39,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:42:39,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5304 [2020-10-14 23:42:39,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:42:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:39,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:42:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:42:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:39,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:42:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:42:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:42:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 23:42:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:42:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 23:42:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 23:42:40,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823366144] [2020-10-14 23:42:40,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:40,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 23:42:40,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337100810] [2020-10-14 23:42:40,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:42:40,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:40,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:42:40,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:42:40,117 INFO L87 Difference]: Start difference. First operand 155 states and 201 transitions. Second operand 9 states. [2020-10-14 23:42:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:40,265 INFO L93 Difference]: Finished difference Result 218 states and 273 transitions. [2020-10-14 23:42:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:42:40,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-14 23:42:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:40,266 INFO L225 Difference]: With dead ends: 218 [2020-10-14 23:42:40,266 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:42:40,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:42:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:42:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:42:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:42:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:42:40,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2020-10-14 23:42:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:40,268 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:42:40,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:42:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:42:40,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:42:40,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:42:40,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:42:40,896 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 269 [2020-10-14 23:42:41,425 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 217 [2020-10-14 23:42:41,893 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 269 [2020-10-14 23:42:42,284 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 269 [2020-10-14 23:42:42,703 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 269 [2020-10-14 23:42:44,474 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 333 DAG size of output: 97 [2020-10-14 23:42:44,840 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-14 23:42:45,145 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 57 [2020-10-14 23:42:45,269 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:42:45,269 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:45,269 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:42:45,270 INFO L271 CegarLoopResult]: At program point L561(line 561) the Hoare annotation is: true [2020-10-14 23:42:45,270 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2020-10-14 23:42:45,270 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2020-10-14 23:42:45,270 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-10-14 23:42:45,270 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-10-14 23:42:45,271 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-10-14 23:42:45,271 INFO L268 CegarLoopResult]: For program point sll_circular_remove_lastEXIT(lines 584 600) no Hoare annotation was computed. [2020-10-14 23:42:45,271 INFO L268 CegarLoopResult]: For program point L589(lines 589 599) no Hoare annotation was computed. [2020-10-14 23:42:45,271 INFO L264 CegarLoopResult]: At program point sll_circular_remove_lastENTRY(lines 584 600) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:45,271 INFO L268 CegarLoopResult]: For program point L589-2(lines 584 600) no Hoare annotation was computed. [2020-10-14 23:42:45,271 INFO L268 CegarLoopResult]: For program point L594-1(lines 594 596) no Hoare annotation was computed. [2020-10-14 23:42:45,272 INFO L264 CegarLoopResult]: At program point L594-3(lines 594 596) the Hoare annotation is: (let ((.cse6 (select (select |old(#memory_$Pointer$.base)| |sll_circular_remove_last_#in~head.base|) |sll_circular_remove_last_#in~head.offset|)) (.cse7 (select (select |old(#memory_$Pointer$.offset)| |sll_circular_remove_last_#in~head.base|) |sll_circular_remove_last_#in~head.offset|))) (let ((.cse13 (select (select |old(#memory_$Pointer$.base)| .cse6) .cse7)) (.cse14 (select (select |old(#memory_$Pointer$.offset)| .cse6) .cse7)) (.cse2 (select (select |#memory_$Pointer$.base| sll_circular_remove_last_~head.base) sll_circular_remove_last_~head.offset)) (.cse3 (select (select |#memory_$Pointer$.offset| sll_circular_remove_last_~head.base) sll_circular_remove_last_~head.offset))) (let ((.cse0 (select (select |#memory_$Pointer$.offset| .cse2) .cse3)) (.cse5 (select (select |old(#memory_$Pointer$.offset)| .cse13) .cse14)) (.cse4 (select (select |old(#memory_$Pointer$.base)| .cse13) .cse14))) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= sll_circular_remove_last_~head.offset |sll_circular_remove_last_#in~head.offset|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= sll_circular_remove_last_~head.base |sll_circular_remove_last_#in~head.base|) (let ((.cse1 (select (select |#memory_$Pointer$.base| .cse2) .cse3))) (or (and (= .cse0 sll_circular_remove_last_~snd_to_last~0.offset) (= .cse1 sll_circular_remove_last_~snd_to_last~0.base)) (and (= (select (select |#memory_$Pointer$.offset| .cse1) .cse0) sll_circular_remove_last_~snd_to_last~0.offset) (= sll_circular_remove_last_~snd_to_last~0.base (select (select |#memory_$Pointer$.base| .cse1) .cse0))) (and (= .cse2 sll_circular_remove_last_~snd_to_last~0.base) (= sll_circular_remove_last_~snd_to_last~0.offset .cse3)) (not (= (select (select |old(#memory_$Pointer$.base)| .cse4) .cse5) .cse6)) (not (= .cse7 (select (select |old(#memory_$Pointer$.offset)| .cse4) .cse5))))) (= |old(#valid)| |#valid|) (= .cse2 (select (select |#memory_$Pointer$.base| sll_circular_remove_last_~last~1.base) sll_circular_remove_last_~last~1.offset)) (let ((.cse10 (= (select (select |#memory_$Pointer$.offset| sll_circular_remove_last_~last~1.base) sll_circular_remove_last_~last~1.offset) .cse3))) (or (let ((.cse8 (select (select |#memory_$Pointer$.base| |sll_circular_remove_last_#in~head.base|) |sll_circular_remove_last_#in~head.offset|)) (.cse9 (select (select |#memory_$Pointer$.offset| |sll_circular_remove_last_#in~head.base|) |sll_circular_remove_last_#in~head.offset|))) (and (= sll_circular_remove_last_~last~1.offset .cse0) (= sll_circular_remove_last_~last~1.base (select (select |#memory_$Pointer$.base| .cse8) .cse9)) .cse10 (let ((.cse11 (= sll_circular_remove_last_~snd_to_last~0.offset .cse9)) (.cse12 (= sll_circular_remove_last_~snd_to_last~0.base .cse8))) (or (and (not (= sll_circular_remove_last_~last~1.base .cse8)) .cse11 .cse12) (and (not (= sll_circular_remove_last_~last~1.offset .cse9)) .cse11 .cse12))))) (and .cse10 (or (not (= .cse7 .cse5)) (not (= .cse4 .cse6)))))))))) [2020-10-14 23:42:45,272 INFO L268 CegarLoopResult]: For program point L594-4(lines 594 596) no Hoare annotation was computed. [2020-10-14 23:42:45,272 INFO L268 CegarLoopResult]: For program point L586-1(lines 586 588) no Hoare annotation was computed. [2020-10-14 23:42:45,272 INFO L264 CegarLoopResult]: At program point L586-3(lines 586 588) the Hoare annotation is: (let ((.cse0 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse1 (= sll_circular_remove_last_~head.offset |sll_circular_remove_last_#in~head.offset|)) (.cse3 (= |#memory_int| |old(#memory_int)|)) (.cse4 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse2 (select (select |#memory_$Pointer$.base| sll_circular_remove_last_~head.base) sll_circular_remove_last_~head.offset)) (.cse5 (= sll_circular_remove_last_~head.base |sll_circular_remove_last_#in~head.base|)) (.cse6 (= |old(#valid)| |#valid|))) (or (and .cse0 .cse1 (= .cse2 sll_circular_remove_last_~last~1.base) .cse3 .cse4 .cse5 .cse6 (= (select (select |old(#memory_$Pointer$.offset)| sll_circular_remove_last_~head.base) sll_circular_remove_last_~head.offset) sll_circular_remove_last_~last~1.offset)) (and .cse0 .cse1 (let ((.cse10 (select (select |old(#memory_$Pointer$.base)| |sll_circular_remove_last_#in~head.base|) |sll_circular_remove_last_#in~head.offset|)) (.cse7 (select (select |old(#memory_$Pointer$.offset)| |sll_circular_remove_last_#in~head.base|) |sll_circular_remove_last_#in~head.offset|))) (let ((.cse8 (select (select |old(#memory_$Pointer$.base)| .cse10) .cse7)) (.cse9 (select (select |old(#memory_$Pointer$.offset)| .cse10) .cse7))) (or (not (= .cse7 (select (select |old(#memory_$Pointer$.offset)| .cse8) .cse9))) (not (= (select (select |old(#memory_$Pointer$.base)| .cse8) .cse9) .cse10))))) .cse3 .cse4 .cse5 .cse6) (let ((.cse11 (select (select |#memory_$Pointer$.offset| sll_circular_remove_last_~head.base) sll_circular_remove_last_~head.offset))) (and (= sll_circular_remove_last_~last~1.offset (select (select |#memory_$Pointer$.offset| .cse2) .cse11)) .cse0 .cse1 .cse3 .cse4 (= (select (select |#memory_$Pointer$.base| .cse2) .cse11) sll_circular_remove_last_~last~1.base) .cse5 .cse6)))) [2020-10-14 23:42:45,272 INFO L268 CegarLoopResult]: For program point L586-4(lines 586 588) no Hoare annotation was computed. [2020-10-14 23:42:45,273 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-10-14 23:42:45,273 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-10-14 23:42:45,273 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-10-14 23:42:45,273 INFO L264 CegarLoopResult]: At program point L576(line 576) the Hoare annotation is: (let ((.cse0 (= sll_circular_create_~head~0.base sll_circular_create_~last~0.base)) (.cse1 (= (select |#valid| sll_circular_create_~last~0.base) 1))) (or (and (not (= (select (select |#memory_$Pointer$.base| sll_circular_create_~head~0.base) sll_circular_create_~head~0.offset) sll_circular_create_~head~0.base)) (<= 3 |sll_circular_create_#in~len|) (= (select |#valid| sll_circular_create_~head~0.base) 1) (not .cse0) .cse1) (let ((.cse3 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse2 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and .cse0 (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse2 (select |#memory_$Pointer$.base| .cse2))) (or (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select |old(#valid)| .cse3) 0)) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse3 (select |#memory_$Pointer$.offset| .cse3))) (or (= (select |old(#valid)| .cse2) 0) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= |sll_circular_create_#in~len| sll_circular_create_~len) .cse1 (= sll_circular_create_~head~0.offset sll_circular_create_~last~0.offset))))) [2020-10-14 23:42:45,273 INFO L268 CegarLoopResult]: For program point L576-1(line 576) no Hoare annotation was computed. [2020-10-14 23:42:45,273 INFO L264 CegarLoopResult]: At program point L573(line 573) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |sll_circular_create_#in~len| sll_circular_create_~len) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:45,273 INFO L264 CegarLoopResult]: At program point L575-2(lines 575 580) the Hoare annotation is: (let ((.cse3 (= sll_circular_create_~head~0.base sll_circular_create_~last~0.base))) (let ((.cse0 (= (select |#valid| sll_circular_create_~head~0.base) 1)) (.cse1 (not .cse3)) (.cse2 (= (select |#valid| sll_circular_create_~last~0.base) 1))) (or (and (not (= (select (select |#memory_$Pointer$.base| sll_circular_create_~head~0.base) sll_circular_create_~head~0.offset) sll_circular_create_~head~0.base)) (<= 3 |sll_circular_create_#in~len|) .cse0 .cse1 .cse2) (and (= sll_circular_create_~last~0.base (select (select (store |#memory_$Pointer$.base| sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| sll_circular_create_~last~0.base) sll_circular_create_~last~0.offset sll_circular_create_~head~0.base)) sll_circular_create_~head~0.base) sll_circular_create_~head~0.offset)) (= sll_circular_create_~last~0.offset (select (select (store |#memory_$Pointer$.offset| sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| sll_circular_create_~last~0.base) sll_circular_create_~last~0.offset sll_circular_create_~head~0.offset)) sll_circular_create_~head~0.base) sll_circular_create_~head~0.offset)) (= |sll_circular_create_#in~len| (+ sll_circular_create_~len 1)) .cse0 .cse1 .cse2) (let ((.cse5 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse4 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and .cse3 (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse4 (select |#memory_$Pointer$.base| .cse4))) (or (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select |old(#valid)| .cse5) 0)) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse5 (select |#memory_$Pointer$.offset| .cse5))) (or (= (select |old(#valid)| .cse4) 0) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= sll_circular_create_~last~0.offset 0) (= |sll_circular_create_#in~len| sll_circular_create_~len) .cse2 (= sll_circular_create_~head~0.offset sll_circular_create_~last~0.offset)))))) [2020-10-14 23:42:45,273 INFO L268 CegarLoopResult]: For program point L573-1(line 573) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point L575-3(lines 575 580) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L264 CegarLoopResult]: At program point sll_circular_createENTRY(lines 572 583) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point sll_circular_createFINAL(lines 572 583) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point sll_circular_createEXIT(lines 572 583) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:42:45,274 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point L609(lines 609 611) no Hoare annotation was computed. [2020-10-14 23:42:45,274 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 613) no Hoare annotation was computed. [2020-10-14 23:42:45,275 INFO L264 CegarLoopResult]: At program point L607(line 607) the Hoare annotation is: (let ((.cse5 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse8 (select |#memory_$Pointer$.offset| .cse5)) (.cse7 (select |#memory_$Pointer$.base| .cse5)) (.cse2 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse0 (<= (+ main_~i~0 1) main_~len~0)) (.cse1 (<= 2 main_~len~0)) (.cse4 (select .cse7 .cse2)) (.cse3 (select .cse8 .cse2))) (or (and .cse0 .cse1 (= .cse2 .cse3) (= .cse4 .cse5)) (and (= .cse5 0) .cse0 .cse1 (= .cse2 0)) (let ((.cse6 (select (select |#memory_$Pointer$.offset| .cse4) .cse3))) (and .cse1 (<= (+ main_~i~0 2) main_~len~0) (= .cse2 .cse6) (= (select (select |#memory_$Pointer$.base| (select .cse7 .cse6)) (select .cse8 .cse6)) .cse5))))))) [2020-10-14 23:42:45,275 INFO L268 CegarLoopResult]: For program point L607-1(lines 606 608) no Hoare annotation was computed. [2020-10-14 23:42:45,275 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 601 615) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:45,275 INFO L264 CegarLoopResult]: At program point L604(line 604) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (<= main_~len~0 2) (<= 2 main_~len~0) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-14 23:42:45,275 INFO L264 CegarLoopResult]: At program point L606-2(lines 606 608) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse4 (select |#memory_$Pointer$.base| .cse0)) (.cse5 (select |#memory_$Pointer$.offset| .cse0)) (.cse2 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse1 (<= 2 main_~len~0)) (.cse7 (select .cse5 .cse2)) (.cse6 (select .cse4 .cse2))) (or (and (= .cse0 0) .cse1 (= .cse2 0)) (let ((.cse3 (select (select |#memory_$Pointer$.offset| .cse6) .cse7))) (and (= main_~i~0 0) (<= (+ main_~i~0 2) main_~len~0) (= .cse2 .cse3) (= (select (select |#memory_$Pointer$.base| (select .cse4 .cse3)) (select .cse5 .cse3)) .cse0))) (and .cse1 (<= (+ main_~i~0 1) main_~len~0) (= .cse2 .cse7) (= .cse6 .cse0)))))) [2020-10-14 23:42:45,275 INFO L268 CegarLoopResult]: For program point L604-1(line 604) no Hoare annotation was computed. [2020-10-14 23:42:45,275 INFO L268 CegarLoopResult]: For program point L606-3(lines 606 608) no Hoare annotation was computed. [2020-10-14 23:42:45,275 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 601 615) no Hoare annotation was computed. [2020-10-14 23:42:45,275 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 601 615) no Hoare annotation was computed. [2020-10-14 23:42:45,275 INFO L264 CegarLoopResult]: At program point L610(lines 601 615) the Hoare annotation is: false [2020-10-14 23:42:45,275 INFO L264 CegarLoopResult]: At program point node_createENTRY(lines 563 571) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:45,276 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 563 571) no Hoare annotation was computed. [2020-10-14 23:42:45,276 INFO L271 CegarLoopResult]: At program point L566(line 566) the Hoare annotation is: true [2020-10-14 23:42:45,276 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 563 571) no Hoare annotation was computed. [2020-10-14 23:42:45,276 INFO L268 CegarLoopResult]: For program point L565(lines 565 567) no Hoare annotation was computed. [2020-10-14 23:42:45,276 INFO L268 CegarLoopResult]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2020-10-14 23:42:45,284 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:246) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translateStore(Term2Expression.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:157) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 23:42:45,291 INFO L168 Benchmark]: Toolchain (without parser) took 144521.49 ms. Allocated memory was 139.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 101.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-10-14 23:42:45,292 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-14 23:42:45,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.72 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 169.0 MB in the end (delta: -68.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:42:45,298 INFO L168 Benchmark]: Boogie Preprocessor took 62.30 ms. Allocated memory is still 203.4 MB. Free memory was 169.0 MB in the beginning and 165.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:42:45,301 INFO L168 Benchmark]: RCFGBuilder took 611.08 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 117.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:42:45,302 INFO L168 Benchmark]: TraceAbstraction took 143249.03 ms. Allocated memory was 203.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 116.3 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-10-14 23:42:45,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 594.72 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 169.0 MB in the end (delta: -68.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.30 ms. Allocated memory is still 203.4 MB. Free memory was 169.0 MB in the beginning and 165.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 611.08 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 117.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 143249.03 ms. Allocated memory was 203.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 116.3 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 613]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...