/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-ext3-properties/sll_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:32:33,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:32:33,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:32:33,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:32:33,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:32:33,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:32:33,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:32:33,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:32:33,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:32:33,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:32:33,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:32:33,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:32:33,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:32:33,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:32:33,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:32:33,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:32:33,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:32:33,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:32:33,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:32:33,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:32:33,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:32:33,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:32:33,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:32:33,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:32:33,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:32:33,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:32:33,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:32:33,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:32:33,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:32:33,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:32:33,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:32:33,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:32:33,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:32:33,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:32:33,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:32:33,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:32:33,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:32:33,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:32:33,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:32:33,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:32:33,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:32:33,467 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 23:32:33,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:32:33,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:32:33,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:32:33,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:32:33,515 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:32:33,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:32:33,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:32:33,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:32:33,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:32:33,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:32:33,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:32:33,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:32:33,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:32:33,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:32:33,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:32:33,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:32:33,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:32:33,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:32:33,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:32:33,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:32:33,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:32:33,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:32:33,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:32:33,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:32:33,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:32:33,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:32:33,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:32:33,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:32:33,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:32:33,526 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 23:32:33,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:32:33,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:32:33,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:32:33,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:32:33,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:32:33,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-14 23:32:33,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/476093bd7/8d5834ca9b4b4b7db7b8fbd4a7ae16e9/FLAGc02784324 [2020-10-14 23:32:34,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:32:34,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-14 23:32:34,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/476093bd7/8d5834ca9b4b4b7db7b8fbd4a7ae16e9/FLAGc02784324 [2020-10-14 23:32:34,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/476093bd7/8d5834ca9b4b4b7db7b8fbd4a7ae16e9 [2020-10-14 23:32:34,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:32:34,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:32:34,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:32:34,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:32:34,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:32:34,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:32:34" (1/1) ... [2020-10-14 23:32:34,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b809082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:34, skipping insertion in model container [2020-10-14 23:32:34,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:32:34" (1/1) ... [2020-10-14 23:32:34,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:32:34,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:32:35,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:32:35,322 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:32:35,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:32:35,447 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:32:35,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35 WrapperNode [2020-10-14 23:32:35,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:32:35,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:32:35,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:32:35,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:32:35,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... [2020-10-14 23:32:35,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:32:35,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:32:35,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:32:35,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:32:35,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:32:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:32:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:32:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:32:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:32:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:32:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 23:32:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-14 23:32:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 23:32:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-14 23:32:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-14 23:32:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:32:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:32:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:32:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:32:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:32:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:32:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:32:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:32:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:32:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:32:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:32:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:32:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:32:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:32:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:32:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:32:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:32:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:32:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:32:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:32:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:32:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:32:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:32:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:32:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:32:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:32:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:32:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:32:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:32:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:32:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:32:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:32:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:32:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:32:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:32:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:32:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:32:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:32:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:32:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:32:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:32:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:32:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:32:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:32:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:32:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:32:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:32:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:32:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:32:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:32:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:32:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:32:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:32:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:32:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:32:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:32:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:32:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:32:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:32:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:32:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:32:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:32:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:32:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:32:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:32:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:32:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:32:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 23:32:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:32:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:32:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-14 23:32:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:32:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 23:32:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:32:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-14 23:32:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-14 23:32:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:32:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:32:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:32:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:32:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:32:35,919 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:32:36,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:32:36,150 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 23:32:36,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:32:36 BoogieIcfgContainer [2020-10-14 23:32:36,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:32:36,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:32:36,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:32:36,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:32:36,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:32:34" (1/3) ... [2020-10-14 23:32:36,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43912431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:32:36, skipping insertion in model container [2020-10-14 23:32:36,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:35" (2/3) ... [2020-10-14 23:32:36,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43912431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:32:36, skipping insertion in model container [2020-10-14 23:32:36,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:32:36" (3/3) ... [2020-10-14 23:32:36,163 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2020-10-14 23:32:36,173 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:32:36,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:32:36,191 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:32:36,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:32:36,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:32:36,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:32:36,211 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:32:36,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:32:36,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:32:36,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:32:36,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:32:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-14 23:32:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:32:36,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:36,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:36,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash -87837704, now seen corresponding path program 1 times [2020-10-14 23:32:36,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:36,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206287706] [2020-10-14 23:32:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:32:36,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:32:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:32:36,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:32:36,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:36,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:32:36,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:32:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:32:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:32:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:32:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:32:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:32:36,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:36,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:32:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:32:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:36,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:32:36,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:32:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:32:36,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206287706] [2020-10-14 23:32:36,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:36,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 23:32:36,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479019462] [2020-10-14 23:32:36,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:32:36,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:36,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:32:36,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:32:36,936 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-14 23:32:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:37,230 INFO L93 Difference]: Finished difference Result 132 states and 178 transitions. [2020-10-14 23:32:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:32:37,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 23:32:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:37,246 INFO L225 Difference]: With dead ends: 132 [2020-10-14 23:32:37,247 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:32:37,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 23:32:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:32:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-10-14 23:32:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:32:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-14 23:32:37,303 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 37 [2020-10-14 23:32:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:37,304 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-14 23:32:37,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:32:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-14 23:32:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:32:37,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:37,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:37,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:32:37,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1536900415, now seen corresponding path program 1 times [2020-10-14 23:32:37,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:37,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908810602] [2020-10-14 23:32:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:37,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:32:38,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-14 23:32:38,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:32:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:32:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:38,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:38,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:32:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:32:38,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:32:38,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:38,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:32:38,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:32:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:38,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:38,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:38,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 23:32:38,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:32:38,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908810602] [2020-10-14 23:32:38,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:32:38,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 23:32:38,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285649255] [2020-10-14 23:32:38,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:32:38,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:38,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:32:38,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:32:38,649 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 11 states. [2020-10-14 23:32:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:39,184 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2020-10-14 23:32:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:32:39,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 23:32:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:39,187 INFO L225 Difference]: With dead ends: 110 [2020-10-14 23:32:39,188 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 23:32:39,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:32:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 23:32:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2020-10-14 23:32:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:32:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-10-14 23:32:39,211 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 42 [2020-10-14 23:32:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:39,211 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-10-14 23:32:39,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:32:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-10-14 23:32:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:32:39,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:39,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:39,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:32:39,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:39,215 INFO L82 PathProgramCache]: Analyzing trace with hash -51447487, now seen corresponding path program 1 times [2020-10-14 23:32:39,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:39,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009533486] [2020-10-14 23:32:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:32:40,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-10-14 23:32:40,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:32:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:32:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:32:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:40,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:40,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:32:40,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:32:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:32:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:32:40,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:32:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:40,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:32:40,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:40,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:40,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:32:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:40,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:40,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 23:32:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:32:40,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009533486] [2020-10-14 23:32:40,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:40,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:32:40,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004810264] [2020-10-14 23:32:40,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:32:40,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:40,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:32:40,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:32:40,599 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 11 states. [2020-10-14 23:32:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:41,311 INFO L93 Difference]: Finished difference Result 138 states and 178 transitions. [2020-10-14 23:32:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:32:41,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 23:32:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:41,314 INFO L225 Difference]: With dead ends: 138 [2020-10-14 23:32:41,314 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:32:41,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:32:41,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:32:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-10-14 23:32:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:32:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2020-10-14 23:32:41,332 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 42 [2020-10-14 23:32:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:41,332 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2020-10-14 23:32:41,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:32:41,332 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2020-10-14 23:32:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:32:41,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:41,335 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:41,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:32:41,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:41,336 INFO L82 PathProgramCache]: Analyzing trace with hash -727947180, now seen corresponding path program 1 times [2020-10-14 23:32:41,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:41,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804964074] [2020-10-14 23:32:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:32:42,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-14 23:32:42,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:32:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:32:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:32:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:32:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:42,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:42,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:32:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:32:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:32:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:32:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:32:42,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:32:42,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:32:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:32:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:32:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 23:32:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:42,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 23:32:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:32:42,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804964074] [2020-10-14 23:32:42,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:42,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:32:42,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994338262] [2020-10-14 23:32:42,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:32:42,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:32:42,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:32:42,562 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 12 states. [2020-10-14 23:32:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:43,435 INFO L93 Difference]: Finished difference Result 179 states and 230 transitions. [2020-10-14 23:32:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:32:43,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-14 23:32:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:43,437 INFO L225 Difference]: With dead ends: 179 [2020-10-14 23:32:43,438 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 23:32:43,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:32:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 23:32:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2020-10-14 23:32:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 23:32:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2020-10-14 23:32:43,451 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 45 [2020-10-14 23:32:43,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:43,452 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2020-10-14 23:32:43,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:32:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2020-10-14 23:32:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:32:43,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:43,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:43,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:32:43,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:43,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1663200358, now seen corresponding path program 1 times [2020-10-14 23:32:43,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:43,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962214083] [2020-10-14 23:32:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:32:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:32:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:32:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:48,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:32:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 23:32:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:32:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:48,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:48,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:48,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:48,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:48,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:48,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:48,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:48,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:32:48,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:32:48,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:48,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:32:48,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 23:32:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:48,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:48,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:32:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:48,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:48,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:32:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:32:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:48,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:32:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:32:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:32:48,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962214083] [2020-10-14 23:32:48,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:32:48,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 23:32:48,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708547789] [2020-10-14 23:32:48,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:32:48,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:48,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:32:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:32:48,677 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 12 states. [2020-10-14 23:32:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:49,027 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2020-10-14 23:32:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:32:49,028 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-14 23:32:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:49,029 INFO L225 Difference]: With dead ends: 90 [2020-10-14 23:32:49,030 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 23:32:49,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:32:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 23:32:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2020-10-14 23:32:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:32:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2020-10-14 23:32:49,041 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 46 [2020-10-14 23:32:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:49,042 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2020-10-14 23:32:49,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:32:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2020-10-14 23:32:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:32:49,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:49,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:49,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:32:49,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:49,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1968577046, now seen corresponding path program 1 times [2020-10-14 23:32:49,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:49,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145186384] [2020-10-14 23:32:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:51,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:51,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:32:51,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2565 [2020-10-14 23:32:51,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:51,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:32:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:32:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:32:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:51,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:51,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:32:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:32:51,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:51,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:32:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:51,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:51,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:32:51,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:51,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:32:51,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:51,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:32:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:32:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 23:32:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:52,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:32:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:52,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:32:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:32:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:32:52,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:52,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:32:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:32:52,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145186384] [2020-10-14 23:32:52,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:52,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:32:52,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223066305] [2020-10-14 23:32:52,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:32:52,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:52,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:32:52,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:32:52,265 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand 19 states. [2020-10-14 23:32:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:53,206 INFO L93 Difference]: Finished difference Result 150 states and 185 transitions. [2020-10-14 23:32:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:32:53,209 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-14 23:32:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:53,211 INFO L225 Difference]: With dead ends: 150 [2020-10-14 23:32:53,211 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:32:53,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:32:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:32:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-10-14 23:32:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:32:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-14 23:32:53,234 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 47 [2020-10-14 23:32:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:53,235 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-14 23:32:53,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:32:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-14 23:32:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:32:53,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:53,236 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:53,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:32:53,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:53,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:53,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1781197021, now seen corresponding path program 2 times [2020-10-14 23:32:53,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:53,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591641338] [2020-10-14 23:32:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:32:53,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-14 23:32:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:32:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 23:32:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:32:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:32:53,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:32:53,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:32:53,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:32:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:32:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:53,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:32:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:32:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:32:53,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:32:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:32:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:32:54,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591641338] [2020-10-14 23:32:54,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:54,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:32:54,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890950403] [2020-10-14 23:32:54,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:32:54,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:54,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:32:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:32:54,100 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 14 states. [2020-10-14 23:32:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:54,792 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2020-10-14 23:32:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:32:54,793 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-14 23:32:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:54,794 INFO L225 Difference]: With dead ends: 98 [2020-10-14 23:32:54,794 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 23:32:54,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:32:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 23:32:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2020-10-14 23:32:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 23:32:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-14 23:32:54,816 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 51 [2020-10-14 23:32:54,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:54,817 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-14 23:32:54,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:32:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-14 23:32:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:32:54,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:54,819 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:54,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:32:54,820 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1370713395, now seen corresponding path program 3 times [2020-10-14 23:32:54,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:54,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865485833] [2020-10-14 23:32:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:58,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:32:58,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3933 [2020-10-14 23:32:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:58,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:32:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:32:58,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 23:32:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:58,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:58,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:58,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:58,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:58,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:32:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:58,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:58,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:58,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:32:58,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:58,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:32:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:59,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:59,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:59,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 23:32:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:59,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:32:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:59,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:32:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:59,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:32:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:59,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:32:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:32:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:59,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:59,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:59,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:32:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:59,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 23:32:59,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865485833] [2020-10-14 23:32:59,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:59,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:32:59,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993674997] [2020-10-14 23:32:59,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:32:59,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:32:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:32:59,219 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 16 states. [2020-10-14 23:32:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:59,999 INFO L93 Difference]: Finished difference Result 139 states and 187 transitions. [2020-10-14 23:33:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:33:00,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-10-14 23:33:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:00,002 INFO L225 Difference]: With dead ends: 139 [2020-10-14 23:33:00,002 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 23:33:00,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:33:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 23:33:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-10-14 23:33:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 23:33:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2020-10-14 23:33:00,020 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 142 transitions. Word has length 52 [2020-10-14 23:33:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:00,020 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 142 transitions. [2020-10-14 23:33:00,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:33:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 142 transitions. [2020-10-14 23:33:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:33:00,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:00,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:00,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:33:00,022 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:00,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1530622877, now seen corresponding path program 4 times [2020-10-14 23:33:00,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:00,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425826693] [2020-10-14 23:33:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:00,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:33:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:33:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-14 23:33:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:00,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:33:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:33:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:33:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:00,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:00,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:00,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:00,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:00,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:00,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:00,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:00,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:00,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:00,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:00,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:33:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 23:33:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:00,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:33:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:33:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:01,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:01,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:33:01,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:01,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:33:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:01,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:33:01,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:33:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:01,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:33:01,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425826693] [2020-10-14 23:33:01,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:01,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:33:01,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354724332] [2020-10-14 23:33:01,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:33:01,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:01,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:33:01,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:33:01,276 INFO L87 Difference]: Start difference. First operand 109 states and 142 transitions. Second operand 16 states. [2020-10-14 23:33:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:02,342 INFO L93 Difference]: Finished difference Result 151 states and 208 transitions. [2020-10-14 23:33:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:33:02,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-14 23:33:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:02,344 INFO L225 Difference]: With dead ends: 151 [2020-10-14 23:33:02,344 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 23:33:02,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:33:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 23:33:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2020-10-14 23:33:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 23:33:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2020-10-14 23:33:02,363 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 53 [2020-10-14 23:33:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:02,363 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2020-10-14 23:33:02,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:33:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2020-10-14 23:33:02,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:33:02,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:02,365 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:02,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:33:02,365 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:02,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2102117773, now seen corresponding path program 5 times [2020-10-14 23:33:02,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:02,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087829213] [2020-10-14 23:33:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:33:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:33:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-14 23:33:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:03,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:33:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:33:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:33:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:03,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:03,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:03,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:03,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:03,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:03,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:03,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:33:03,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:03,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:03,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:33:03,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:03,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 23:33:03,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:03,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:33:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:33:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:03,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:33:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:03,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:33:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:33:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:33:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:03,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:33:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:33:03,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087829213] [2020-10-14 23:33:03,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:03,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:33:03,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547669453] [2020-10-14 23:33:03,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:33:03,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:03,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:33:03,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:33:03,626 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand 17 states. [2020-10-14 23:33:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:04,794 INFO L93 Difference]: Finished difference Result 151 states and 206 transitions. [2020-10-14 23:33:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:33:04,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-14 23:33:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:04,797 INFO L225 Difference]: With dead ends: 151 [2020-10-14 23:33:04,797 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 23:33:04,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:33:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 23:33:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 126. [2020-10-14 23:33:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 23:33:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2020-10-14 23:33:04,811 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 54 [2020-10-14 23:33:04,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:04,811 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2020-10-14 23:33:04,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:33:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2020-10-14 23:33:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:33:04,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:04,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:04,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:33:04,813 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:04,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:04,814 INFO L82 PathProgramCache]: Analyzing trace with hash -407513290, now seen corresponding path program 1 times [2020-10-14 23:33:04,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:04,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672605818] [2020-10-14 23:33:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:04,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:33:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-14 23:33:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:33:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:33:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:33:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:09,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:09,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:09,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:09,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:09,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:09,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:09,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:33:09,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:09,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:33:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:09,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:33:09,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:33:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 23:33:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:09,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:33:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:33:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:09,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:33:09,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:33:09,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:09,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:33:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 23:33:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:09,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:33:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 23:33:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 23:33:09,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672605818] [2020-10-14 23:33:09,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:09,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:33:09,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99238432] [2020-10-14 23:33:09,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:33:09,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:09,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:33:09,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:33:09,606 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand 12 states. [2020-10-14 23:33:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:10,195 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2020-10-14 23:33:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:33:10,195 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-14 23:33:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:10,197 INFO L225 Difference]: With dead ends: 216 [2020-10-14 23:33:10,197 INFO L226 Difference]: Without dead ends: 155 [2020-10-14 23:33:10,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:33:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-14 23:33:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 132. [2020-10-14 23:33:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 23:33:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 178 transitions. [2020-10-14 23:33:10,212 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 178 transitions. Word has length 55 [2020-10-14 23:33:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:10,213 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 178 transitions. [2020-10-14 23:33:10,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:33:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 178 transitions. [2020-10-14 23:33:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:33:10,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:10,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:10,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:33:10,215 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:10,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2096457032, now seen corresponding path program 1 times [2020-10-14 23:33:10,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:10,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757817921] [2020-10-14 23:33:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:13,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:33:13,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:33:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3114 [2020-10-14 23:33:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:13,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:33:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:33:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:33:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:13,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:13,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:13,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:13,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:13,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:13,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:13,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:13,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:33:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:13,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:33:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:33:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:33:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:33:13,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:13,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:33:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:33:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:33:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:33:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 23:33:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:13,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:33:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:13,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 23:33:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:13,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:33:13,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:13,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 23:33:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 23:33:13,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757817921] [2020-10-14 23:33:13,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:13,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:33:13,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450555108] [2020-10-14 23:33:13,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:33:13,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:13,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:33:13,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:33:13,733 INFO L87 Difference]: Start difference. First operand 132 states and 178 transitions. Second operand 12 states. [2020-10-14 23:33:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:14,195 INFO L93 Difference]: Finished difference Result 162 states and 215 transitions. [2020-10-14 23:33:14,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:33:14,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-14 23:33:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:14,198 INFO L225 Difference]: With dead ends: 162 [2020-10-14 23:33:14,198 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 23:33:14,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:33:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 23:33:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2020-10-14 23:33:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 23:33:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 180 transitions. [2020-10-14 23:33:14,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 180 transitions. Word has length 55 [2020-10-14 23:33:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:14,221 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 180 transitions. [2020-10-14 23:33:14,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:33:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 180 transitions. [2020-10-14 23:33:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:33:14,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:14,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:14,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:33:14,223 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash -936081888, now seen corresponding path program 2 times [2020-10-14 23:33:14,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:14,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796985628] [2020-10-14 23:33:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:15,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:33:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 23:33:15,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:15,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:33:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 23:33:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:33:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:15,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:15,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:15,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:15,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:15,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:15,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:15,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:15,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:33:15,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:33:15,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:15,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:33:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:16,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:16,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:33:16,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:33:16,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:16,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:33:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:33:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:16,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:16,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:33:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:16,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 23:33:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:33:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:16,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:33:16,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796985628] [2020-10-14 23:33:16,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:16,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:33:16,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100242] [2020-10-14 23:33:16,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:33:16,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:16,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:33:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:33:16,283 INFO L87 Difference]: Start difference. First operand 134 states and 180 transitions. Second operand 20 states. [2020-10-14 23:33:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:17,335 INFO L93 Difference]: Finished difference Result 176 states and 254 transitions. [2020-10-14 23:33:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:33:17,336 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 23:33:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:17,338 INFO L225 Difference]: With dead ends: 176 [2020-10-14 23:33:17,338 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:33:17,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:33:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:33:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 130. [2020-10-14 23:33:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 23:33:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2020-10-14 23:33:17,354 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 55 [2020-10-14 23:33:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:17,355 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2020-10-14 23:33:17,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:33:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2020-10-14 23:33:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:33:17,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:17,356 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:17,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:33:17,357 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1011494620, now seen corresponding path program 6 times [2020-10-14 23:33:17,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:17,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736391631] [2020-10-14 23:33:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:18,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:33:18,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:33:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-14 23:33:18,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:18,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:18,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:33:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:33:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:33:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:18,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:18,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:18,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:18,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:18,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:18,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:18,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:18,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:18,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:33:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:33:18,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:18,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:33:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:33:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:18,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 23:33:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:18,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:18,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:33:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:18,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:33:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:18,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:33:18,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:33:18,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:18,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:33:18,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736391631] [2020-10-14 23:33:18,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:18,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:33:18,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347590248] [2020-10-14 23:33:18,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:33:18,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:33:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:33:18,906 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand 22 states. [2020-10-14 23:33:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:20,045 INFO L93 Difference]: Finished difference Result 195 states and 292 transitions. [2020-10-14 23:33:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:33:20,045 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-10-14 23:33:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:20,047 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:33:20,048 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 23:33:20,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:33:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 23:33:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 167. [2020-10-14 23:33:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 23:33:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 244 transitions. [2020-10-14 23:33:20,085 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 244 transitions. Word has length 57 [2020-10-14 23:33:20,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:20,086 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 244 transitions. [2020-10-14 23:33:20,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:33:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 244 transitions. [2020-10-14 23:33:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:33:20,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:20,088 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:20,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:33:20,088 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:20,088 INFO L82 PathProgramCache]: Analyzing trace with hash -696618444, now seen corresponding path program 7 times [2020-10-14 23:33:20,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:20,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487283956] [2020-10-14 23:33:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:33:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2841 [2020-10-14 23:33:22,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:22,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:33:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:33:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:33:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:23,313 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2020-10-14 23:33:23,737 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-10-14 23:33:24,051 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-10-14 23:33:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:24,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:24,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:24,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:24,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:24,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:24,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:24,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:24,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:24,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:24,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:33:24,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:33:24,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:24,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:33:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:24,692 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-10-14 23:33:24,981 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-14 23:33:24,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 23:33:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:25,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:25,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:33:25,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:25,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:25,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:33:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:25,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:33:25,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:33:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:25,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:33:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:25,369 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-14 23:33:25,630 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-14 23:33:25,826 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 23:33:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:33:25,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487283956] [2020-10-14 23:33:25,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:25,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:33:25,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422451096] [2020-10-14 23:33:25,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:33:25,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:25,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:33:25,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:33:25,860 INFO L87 Difference]: Start difference. First operand 167 states and 244 transitions. Second operand 18 states. [2020-10-14 23:33:26,772 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 23:33:27,553 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-14 23:33:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:27,831 INFO L93 Difference]: Finished difference Result 195 states and 296 transitions. [2020-10-14 23:33:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:33:27,832 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-10-14 23:33:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:27,834 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:33:27,836 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 23:33:27,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:33:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 23:33:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 171. [2020-10-14 23:33:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 23:33:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 254 transitions. [2020-10-14 23:33:27,890 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 254 transitions. Word has length 58 [2020-10-14 23:33:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:27,890 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 254 transitions. [2020-10-14 23:33:27,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:33:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 254 transitions. [2020-10-14 23:33:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:33:27,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:27,894 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:27,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:33:27,896 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2108515876, now seen corresponding path program 8 times [2020-10-14 23:33:27,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:27,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732478077] [2020-10-14 23:33:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:30,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:33:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-10-14 23:33:30,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:30,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:33:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:33:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:33:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:31,108 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2020-10-14 23:33:31,474 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-10-14 23:33:31,711 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2020-10-14 23:33:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:31,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:31,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:31,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:31,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:31,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:33:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 23:33:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:31,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:33:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:32,233 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 20 [2020-10-14 23:33:32,695 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 27 [2020-10-14 23:33:33,130 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 29 [2020-10-14 23:33:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 23:33:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:33,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:33,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:33:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:33,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:33,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:33:33,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:33,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:33:33,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:33,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:33:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:33:33,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:33,811 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-14 23:33:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:33:33,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732478077] [2020-10-14 23:33:33,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:33,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:33:33,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54537380] [2020-10-14 23:33:33,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:33:33,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:33,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:33:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:33:33,953 INFO L87 Difference]: Start difference. First operand 171 states and 254 transitions. Second operand 19 states. [2020-10-14 23:33:34,828 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-14 23:33:35,857 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-14 23:33:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:36,178 INFO L93 Difference]: Finished difference Result 199 states and 306 transitions. [2020-10-14 23:33:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:33:36,179 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-14 23:33:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:36,181 INFO L225 Difference]: With dead ends: 199 [2020-10-14 23:33:36,181 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 23:33:36,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:33:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 23:33:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 172. [2020-10-14 23:33:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:33:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2020-10-14 23:33:36,205 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 59 [2020-10-14 23:33:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:36,206 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2020-10-14 23:33:36,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:33:36,206 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2020-10-14 23:33:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:33:36,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:36,208 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:36,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:33:36,208 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash 402935559, now seen corresponding path program 3 times [2020-10-14 23:33:36,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:36,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112889970] [2020-10-14 23:33:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:33:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:33:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 23:33:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:36,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:33:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 23:33:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:33:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:36,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:36,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:36,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:36,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:36,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:33:36,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:33:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:36,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 23:33:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:36,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:33:36,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 23:33:36,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:36,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:33:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:33:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:36,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:36,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:33:36,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:36,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 23:33:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:36,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:36,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:36,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:36,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:33:36,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:36,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 23:33:37,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112889970] [2020-10-14 23:33:37,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:37,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:33:37,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656155509] [2020-10-14 23:33:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:33:37,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:33:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:33:37,032 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand 16 states. [2020-10-14 23:33:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:38,076 INFO L93 Difference]: Finished difference Result 197 states and 302 transitions. [2020-10-14 23:33:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:33:38,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-14 23:33:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:38,079 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:33:38,079 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 23:33:38,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:33:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 23:33:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 168. [2020-10-14 23:33:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-14 23:33:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 246 transitions. [2020-10-14 23:33:38,104 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 246 transitions. Word has length 59 [2020-10-14 23:33:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:38,105 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 246 transitions. [2020-10-14 23:33:38,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:33:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 246 transitions. [2020-10-14 23:33:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:33:38,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:38,107 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:38,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:33:38,107 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:38,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:38,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1367303988, now seen corresponding path program 9 times [2020-10-14 23:33:38,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:38,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676640146] [2020-10-14 23:33:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:33:41,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3067 [2020-10-14 23:33:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:41,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:33:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:33:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:33:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:41,421 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-14 23:33:41,655 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-10-14 23:33:41,832 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-14 23:33:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:41,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:41,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:41,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:41,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:33:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:33:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:41,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:33:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:42,222 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2020-10-14 23:33:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 23:33:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:42,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:42,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:42,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:33:42,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:42,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:33:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:42,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:42,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:33:42,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:42,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:33:42,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:42,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:42,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:33:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:33:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:33:43,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676640146] [2020-10-14 23:33:43,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:43,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:33:43,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561590070] [2020-10-14 23:33:43,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:33:43,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:43,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:33:43,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:33:43,058 INFO L87 Difference]: Start difference. First operand 168 states and 246 transitions. Second operand 20 states. [2020-10-14 23:33:44,977 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-14 23:33:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:45,299 INFO L93 Difference]: Finished difference Result 199 states and 303 transitions. [2020-10-14 23:33:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:33:45,299 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-14 23:33:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:45,301 INFO L225 Difference]: With dead ends: 199 [2020-10-14 23:33:45,301 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 23:33:45,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:33:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 23:33:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 169. [2020-10-14 23:33:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 23:33:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 248 transitions. [2020-10-14 23:33:45,325 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 248 transitions. Word has length 60 [2020-10-14 23:33:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:45,325 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 248 transitions. [2020-10-14 23:33:45,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:33:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 248 transitions. [2020-10-14 23:33:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:33:45,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:45,328 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:45,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:33:45,328 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1743537372, now seen corresponding path program 10 times [2020-10-14 23:33:45,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:45,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321904003] [2020-10-14 23:33:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:49,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:49,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 23:33:49,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:49,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4568 [2020-10-14 23:33:49,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:49,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:33:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:33:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:33:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:50,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:50,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:50,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:50,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:50,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:50,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:50,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:50,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:50,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:50,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:50,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:33:50,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:33:50,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:50,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:33:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:33:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 23:33:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:50,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:50,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:33:50,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:50,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:33:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:33:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 23:33:50,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321904003] [2020-10-14 23:33:50,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:50,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:33:50,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354460701] [2020-10-14 23:33:50,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:33:50,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:50,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:33:50,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:33:50,528 INFO L87 Difference]: Start difference. First operand 169 states and 248 transitions. Second operand 20 states. [2020-10-14 23:33:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:51,783 INFO L93 Difference]: Finished difference Result 189 states and 285 transitions. [2020-10-14 23:33:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:33:51,784 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2020-10-14 23:33:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:51,786 INFO L225 Difference]: With dead ends: 189 [2020-10-14 23:33:51,786 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 23:33:51,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:33:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 23:33:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2020-10-14 23:33:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 23:33:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 230 transitions. [2020-10-14 23:33:51,807 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 230 transitions. Word has length 61 [2020-10-14 23:33:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:51,807 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 230 transitions. [2020-10-14 23:33:51,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:33:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 230 transitions. [2020-10-14 23:33:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:33:51,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:51,810 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:51,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:33:51,810 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2060971221, now seen corresponding path program 11 times [2020-10-14 23:33:51,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:51,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181066421] [2020-10-14 23:33:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:53,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:33:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:53,716 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-14 23:33:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:53,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:53,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:53,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:53,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:53,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:53,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:53,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:33:53,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:33:53,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:53,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:33:53,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:33:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:33:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:33:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:33:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:54,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:54,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:33:54,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:33:54,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:54,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:33:54,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181066421] [2020-10-14 23:33:54,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:54,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:33:54,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338320849] [2020-10-14 23:33:54,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:33:54,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:54,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:33:54,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:33:54,664 INFO L87 Difference]: Start difference. First operand 161 states and 230 transitions. Second operand 18 states. [2020-10-14 23:33:55,466 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2020-10-14 23:33:56,326 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-14 23:33:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:56,532 INFO L93 Difference]: Finished difference Result 182 states and 262 transitions. [2020-10-14 23:33:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:33:56,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-14 23:33:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:56,534 INFO L225 Difference]: With dead ends: 182 [2020-10-14 23:33:56,534 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 23:33:56,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:33:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 23:33:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 161. [2020-10-14 23:33:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 23:33:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 229 transitions. [2020-10-14 23:33:56,553 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 229 transitions. Word has length 61 [2020-10-14 23:33:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:56,553 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 229 transitions. [2020-10-14 23:33:56,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:33:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 229 transitions. [2020-10-14 23:33:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:33:56,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:56,555 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:56,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:33:56,556 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1772385115, now seen corresponding path program 12 times [2020-10-14 23:33:56,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:56,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955864432] [2020-10-14 23:33:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:56,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:33:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:33:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:33:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:58,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:58,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:58,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:33:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:58,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:33:58,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:33:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:33:58,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 23:33:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:33:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:33:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:33:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:33:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:33:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:33:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:33:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:33:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:33:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:33:58,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955864432] [2020-10-14 23:33:58,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:58,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:33:58,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220575804] [2020-10-14 23:33:58,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:33:58,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:58,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:33:58,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:33:58,535 INFO L87 Difference]: Start difference. First operand 161 states and 229 transitions. Second operand 24 states. [2020-10-14 23:33:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:59,779 INFO L93 Difference]: Finished difference Result 224 states and 350 transitions. [2020-10-14 23:33:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:33:59,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 62 [2020-10-14 23:33:59,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:59,782 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:33:59,782 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 23:33:59,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:33:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 23:33:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 196. [2020-10-14 23:33:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 23:33:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 298 transitions. [2020-10-14 23:33:59,808 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 298 transitions. Word has length 62 [2020-10-14 23:33:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:59,808 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 298 transitions. [2020-10-14 23:33:59,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:33:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 298 transitions. [2020-10-14 23:33:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 23:33:59,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:59,811 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:33:59,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:33:59,811 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:59,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1416150421, now seen corresponding path program 13 times [2020-10-14 23:33:59,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:59,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462738895] [2020-10-14 23:33:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:03,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:03,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 23:34:03,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:34:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3257 [2020-10-14 23:34:03,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:03,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:34:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:34:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:34:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:05,579 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 349 DAG size of output: 73 [2020-10-14 23:34:07,889 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 353 DAG size of output: 77 [2020-10-14 23:34:10,151 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 349 DAG size of output: 74 [2020-10-14 23:34:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:10,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:10,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:10,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:10,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:34:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:34:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:10,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:10,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:34:10,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 23:34:10,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:10,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:34:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:34:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:11,242 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-10-14 23:34:12,425 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 206 DAG size of output: 90 [2020-10-14 23:34:13,682 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 206 DAG size of output: 97 [2020-10-14 23:34:13,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:34:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:13,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:13,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:34:13,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:34:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:34:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:13,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:34:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 23:34:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:13,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:34:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:34:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:34:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:14,304 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 36 [2020-10-14 23:34:14,494 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-10-14 23:34:14,912 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2020-10-14 23:34:15,309 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-14 23:34:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:34:15,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462738895] [2020-10-14 23:34:15,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:15,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:34:15,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332025106] [2020-10-14 23:34:15,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:34:15,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:15,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:34:15,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:34:15,355 INFO L87 Difference]: Start difference. First operand 196 states and 298 transitions. Second operand 20 states. [2020-10-14 23:34:16,430 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 23:34:17,039 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 23:34:18,447 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 105 [2020-10-14 23:34:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:18,845 INFO L93 Difference]: Finished difference Result 224 states and 352 transitions. [2020-10-14 23:34:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:34:18,847 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-10-14 23:34:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:18,849 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:34:18,850 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 23:34:18,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:34:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 23:34:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 200. [2020-10-14 23:34:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-14 23:34:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 309 transitions. [2020-10-14 23:34:18,882 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 309 transitions. Word has length 63 [2020-10-14 23:34:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:18,883 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 309 transitions. [2020-10-14 23:34:18,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:34:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 309 transitions. [2020-10-14 23:34:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:34:18,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:18,887 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:18,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:34:18,887 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1037190501, now seen corresponding path program 14 times [2020-10-14 23:34:18,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:18,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816728336] [2020-10-14 23:34:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:18,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:34:22,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:34:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3601 [2020-10-14 23:34:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:34:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:34:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:34:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:29,418 WARN L193 SmtUtils]: Spent 6.24 s on a formula simplification. DAG size of input: 626 DAG size of output: 78 [2020-10-14 23:34:36,011 WARN L193 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 630 DAG size of output: 83 [2020-10-14 23:34:42,335 WARN L193 SmtUtils]: Spent 6.22 s on a formula simplification. DAG size of input: 626 DAG size of output: 88 [2020-10-14 23:34:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:42,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:42,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:42,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:42,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:42,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:34:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:42,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:42,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:34:42,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:42,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:42,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:34:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:42,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:42,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:34:42,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:42,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 23:34:42,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:42,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:34:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:34:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:43,381 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 57 [2020-10-14 23:34:44,473 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 237 DAG size of output: 82 [2020-10-14 23:34:45,607 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 237 DAG size of output: 80 [2020-10-14 23:34:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:34:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:45,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:45,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:34:45,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:34:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:45,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:34:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:34:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:34:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:45,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:34:45,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:34:45,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:45,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:34:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:34:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:34:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:46,341 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 28 [2020-10-14 23:34:46,595 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 36 [2020-10-14 23:34:47,246 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 65 [2020-10-14 23:34:48,103 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2020-10-14 23:34:49,030 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 77 [2020-10-14 23:34:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:34:49,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816728336] [2020-10-14 23:34:49,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:49,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:34:49,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596009571] [2020-10-14 23:34:49,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:34:49,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:49,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:34:49,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:34:49,077 INFO L87 Difference]: Start difference. First operand 200 states and 309 transitions. Second operand 21 states. [2020-10-14 23:34:50,112 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-14 23:34:50,753 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 23:34:52,250 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-14 23:34:52,840 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2020-10-14 23:34:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:53,299 INFO L93 Difference]: Finished difference Result 228 states and 363 transitions. [2020-10-14 23:34:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:34:53,306 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-14 23:34:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:53,308 INFO L225 Difference]: With dead ends: 228 [2020-10-14 23:34:53,308 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 23:34:53,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:34:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 23:34:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 201. [2020-10-14 23:34:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-14 23:34:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 311 transitions. [2020-10-14 23:34:53,341 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 311 transitions. Word has length 64 [2020-10-14 23:34:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:53,341 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 311 transitions. [2020-10-14 23:34:53,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:34:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 311 transitions. [2020-10-14 23:34:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:34:53,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:53,347 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:53,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:34:53,347 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash 218652245, now seen corresponding path program 15 times [2020-10-14 23:34:53,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:53,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607819768] [2020-10-14 23:34:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:58,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:34:58,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:34:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 23:34:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:58,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:34:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:34:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:34:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:02,651 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 453 DAG size of output: 96 [2020-10-14 23:35:06,651 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 457 DAG size of output: 90 [2020-10-14 23:35:10,856 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 453 DAG size of output: 86 [2020-10-14 23:35:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:35:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:10,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:35:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:11,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:11,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:35:11,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 23:35:11,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:11,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:35:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:11,741 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2020-10-14 23:35:12,389 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 94 [2020-10-14 23:35:13,232 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 94 [2020-10-14 23:35:13,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:35:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:13,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:13,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:35:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:13,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:35:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:35:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:35:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:35:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:35:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:13,836 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-10-14 23:35:14,158 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2020-10-14 23:35:14,529 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2020-10-14 23:35:14,903 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2020-10-14 23:35:15,232 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2020-10-14 23:35:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:35:15,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607819768] [2020-10-14 23:35:15,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:15,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:35:15,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76555033] [2020-10-14 23:35:15,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:35:15,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:15,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:35:15,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:35:15,287 INFO L87 Difference]: Start difference. First operand 201 states and 311 transitions. Second operand 22 states. [2020-10-14 23:35:16,481 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 23:35:17,058 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-14 23:35:18,927 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2020-10-14 23:35:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:19,408 INFO L93 Difference]: Finished difference Result 232 states and 374 transitions. [2020-10-14 23:35:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:35:19,410 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-14 23:35:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:19,412 INFO L225 Difference]: With dead ends: 232 [2020-10-14 23:35:19,412 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 23:35:19,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:35:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 23:35:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 202. [2020-10-14 23:35:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 23:35:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 313 transitions. [2020-10-14 23:35:19,494 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 313 transitions. Word has length 65 [2020-10-14 23:35:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:19,494 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 313 transitions. [2020-10-14 23:35:19,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:35:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 313 transitions. [2020-10-14 23:35:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:35:19,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:19,496 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:35:19,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:35:19,497 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash 495071707, now seen corresponding path program 16 times [2020-10-14 23:35:19,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:19,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789543648] [2020-10-14 23:35:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:24,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:35:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:35:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:24,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:24,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:35:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:24,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:24,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:24,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:35:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:24,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:24,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:35:24,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 23:35:24,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:24,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:35:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:35:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:35:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:25,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:25,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:25,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:25,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:35:25,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:25,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:35:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:35:25,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:25,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:35:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:25,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:25,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:25,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:35:25,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:25,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:35:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:35:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 23:35:25,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789543648] [2020-10-14 23:35:25,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:25,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:35:25,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129281558] [2020-10-14 23:35:25,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:35:25,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:35:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:35:25,652 INFO L87 Difference]: Start difference. First operand 202 states and 313 transitions. Second operand 23 states. [2020-10-14 23:35:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:27,833 INFO L93 Difference]: Finished difference Result 222 states and 352 transitions. [2020-10-14 23:35:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:35:27,833 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-10-14 23:35:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:27,835 INFO L225 Difference]: With dead ends: 222 [2020-10-14 23:35:27,836 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 23:35:27,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:35:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 23:35:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 194. [2020-10-14 23:35:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:35:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 293 transitions. [2020-10-14 23:35:27,868 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 293 transitions. Word has length 66 [2020-10-14 23:35:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:27,868 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 293 transitions. [2020-10-14 23:35:27,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:35:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 293 transitions. [2020-10-14 23:35:27,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:35:27,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:27,871 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:35:27,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:35:27,871 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:27,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1745586434, now seen corresponding path program 17 times [2020-10-14 23:35:27,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:27,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638171196] [2020-10-14 23:35:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:35:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2615 [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:35:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:35,484 WARN L193 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 505 DAG size of output: 73 [2020-10-14 23:35:39,951 WARN L193 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 509 DAG size of output: 81 [2020-10-14 23:35:44,183 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 505 DAG size of output: 75 [2020-10-14 23:35:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:35:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:44,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:35:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:44,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:35:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:35:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:44,967 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2020-10-14 23:35:45,566 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 72 [2020-10-14 23:35:46,072 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-10-14 23:35:46,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 23:35:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:35:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:35:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 23:35:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:35:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:35:46,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:46,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:35:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:35:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:46,664 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-14 23:35:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:35:46,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638171196] [2020-10-14 23:35:46,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:46,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:35:46,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492854155] [2020-10-14 23:35:46,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:35:46,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:46,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:35:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:35:46,837 INFO L87 Difference]: Start difference. First operand 194 states and 293 transitions. Second operand 20 states. [2020-10-14 23:35:47,981 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 54 [2020-10-14 23:35:48,624 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 121 [2020-10-14 23:35:49,142 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 23:35:50,106 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-14 23:35:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:50,448 INFO L93 Difference]: Finished difference Result 215 states and 327 transitions. [2020-10-14 23:35:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:35:50,450 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-14 23:35:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:50,452 INFO L225 Difference]: With dead ends: 215 [2020-10-14 23:35:50,452 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 23:35:50,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:35:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 23:35:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2020-10-14 23:35:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:35:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 292 transitions. [2020-10-14 23:35:50,483 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 292 transitions. Word has length 66 [2020-10-14 23:35:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:50,484 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 292 transitions. [2020-10-14 23:35:50,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:35:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 292 transitions. [2020-10-14 23:35:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 23:35:50,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:50,486 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:35:50,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:35:50,487 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:50,487 INFO L82 PathProgramCache]: Analyzing trace with hash 585391310, now seen corresponding path program 18 times [2020-10-14 23:35:50,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:50,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831869547] [2020-10-14 23:35:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 23:35:52,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:35:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:52,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:52,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:52,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:52,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:35:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:52,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:35:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:35:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:35:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:35:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:35:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:52,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 23:35:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:35:52,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:35:52,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:35:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 23:35:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:35:52,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:35:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:35:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:35:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:53,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831869547] [2020-10-14 23:35:53,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:53,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:35:53,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480780810] [2020-10-14 23:35:53,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:35:53,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:35:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:35:53,151 INFO L87 Difference]: Start difference. First operand 194 states and 292 transitions. Second operand 26 states. [2020-10-14 23:35:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:54,774 INFO L93 Difference]: Finished difference Result 257 states and 422 transitions. [2020-10-14 23:35:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:35:54,775 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 67 [2020-10-14 23:35:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:54,778 INFO L225 Difference]: With dead ends: 257 [2020-10-14 23:35:54,778 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 23:35:54,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:35:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 23:35:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 229. [2020-10-14 23:35:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 23:35:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 365 transitions. [2020-10-14 23:35:54,815 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 365 transitions. Word has length 67 [2020-10-14 23:35:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:54,816 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 365 transitions. [2020-10-14 23:35:54,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:35:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 365 transitions. [2020-10-14 23:35:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:35:54,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:54,819 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:35:54,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:35:54,820 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1020919166, now seen corresponding path program 19 times [2020-10-14 23:35:54,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:54,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796640100] [2020-10-14 23:35:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:35:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:35:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3439 [2020-10-14 23:35:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:58,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:35:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:35:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:35:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0