/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:51,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:51,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:51,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:51,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:51,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:51,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:51,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:51,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:51,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:51,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:51,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:51,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:51,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:51,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:51,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:51,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:51,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:51,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:51,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:51,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:51,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:51,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:51,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:51,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:51,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:51,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:51,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:51,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:51,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:51,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:51,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:51,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:51,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:51,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:51,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:51,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:51,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:51,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:51,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:51,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:51,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:32:51,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:51,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:51,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:51,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:51,622 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:51,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:51,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:51,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:51,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:51,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:51,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:51,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:51,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:51,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:51,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:51,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:51,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:51,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:51,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:51,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:51,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:51,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:51,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:51,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:51,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:51,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:51,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:51,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:51,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:51,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:32:52,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:52,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:52,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:52,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:52,130 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:52,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 05:32:52,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514aa96e1/f724001394814108bb5ec64901ce40ef/FLAG83b0dc310 [2020-09-25 05:32:52,776 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:52,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 05:32:52,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514aa96e1/f724001394814108bb5ec64901ce40ef/FLAG83b0dc310 [2020-09-25 05:32:53,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514aa96e1/f724001394814108bb5ec64901ce40ef [2020-09-25 05:32:53,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:53,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:53,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:53,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:53,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:53,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700715c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53, skipping insertion in model container [2020-09-25 05:32:53,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:53,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:53,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:53,718 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:53,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:53,831 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:53,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53 WrapperNode [2020-09-25 05:32:53,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:53,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:53,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:53,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:53,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:53,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:53,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:53,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:53,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:32:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:32:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 05:32:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 05:32:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 05:32:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 05:32:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 05:32:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 05:32:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:32:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:32:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:32:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 05:32:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 05:32:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 05:32:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 05:32:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 05:32:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 05:32:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:32:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 05:32:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:54,359 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 05:32:54,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:54,694 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 05:32:54,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:54 BoogieIcfgContainer [2020-09-25 05:32:54,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:54,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:54,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:54,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:54,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:53" (1/3) ... [2020-09-25 05:32:54,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7113ffe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:54, skipping insertion in model container [2020-09-25 05:32:54,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53" (2/3) ... [2020-09-25 05:32:54,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7113ffe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:54, skipping insertion in model container [2020-09-25 05:32:54,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:54" (3/3) ... [2020-09-25 05:32:54,710 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 05:32:54,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:54,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:32:54,757 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:32:54,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:54,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:54,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:54,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:54,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:54,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:54,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:54,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 05:32:54,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:32:54,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:54,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:54,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:54,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 05:32:54,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:54,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878350019] [2020-09-25 05:32:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 05:32:55,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:32:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 05:32:55,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:32:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:32:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:55,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:32:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:32:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:55,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:32:55,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 05:32:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:32:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 05:32:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:32:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:32:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:32:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:55,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:32:55,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:32:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 05:32:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:55,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:55,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:32:55,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:32:55,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878350019] [2020-09-25 05:32:55,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:55,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:32:55,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794077588] [2020-09-25 05:32:55,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:32:55,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:55,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:32:55,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:32:55,751 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 05:32:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:56,186 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 05:32:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:32:56,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 05:32:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:56,214 INFO L225 Difference]: With dead ends: 289 [2020-09-25 05:32:56,214 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 05:32:56,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 05:32:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 05:32:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 05:32:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 05:32:56,361 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 05:32:56,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:56,364 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 05:32:56,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:32:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 05:32:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:32:56,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:56,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:56,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:56,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 05:32:56,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:56,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510662139] [2020-09-25 05:32:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 05:33:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:33:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:33:01,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:33:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:33:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:33:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:01,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:01,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:33:01,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:01,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:33:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:33:01,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:33:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:33:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 05:33:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:33:01,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 05:33:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:01,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:33:01,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:01,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:01,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:01,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510662139] [2020-09-25 05:33:01,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:01,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:33:01,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055664996] [2020-09-25 05:33:01,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:33:01,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:33:01,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:33:01,829 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 9 states. [2020-09-25 05:33:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:02,947 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2020-09-25 05:33:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:02,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 05:33:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:02,955 INFO L225 Difference]: With dead ends: 275 [2020-09-25 05:33:02,955 INFO L226 Difference]: Without dead ends: 169 [2020-09-25 05:33:02,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:33:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-25 05:33:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-09-25 05:33:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 05:33:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-09-25 05:33:03,009 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 69 [2020-09-25 05:33:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:03,010 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-09-25 05:33:03,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:33:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-09-25 05:33:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 05:33:03,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:03,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:03,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:03,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:03,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-25 05:33:03,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:03,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59237892] [2020-09-25 05:33:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:33:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:33:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:33:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:08,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:33:08,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:08,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:33:08,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:33:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:33:08,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 05:33:08,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:33:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 05:33:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:33:08,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:33:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 05:33:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:08,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:08,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:33:08,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:33:08,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59237892] [2020-09-25 05:33:08,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:08,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 05:33:08,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155284835] [2020-09-25 05:33:08,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:33:08,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:08,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:33:08,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:33:08,612 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 13 states. [2020-09-25 05:33:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:09,788 INFO L93 Difference]: Finished difference Result 314 states and 354 transitions. [2020-09-25 05:33:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:33:09,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-09-25 05:33:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:09,792 INFO L225 Difference]: With dead ends: 314 [2020-09-25 05:33:09,792 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 05:33:09,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-09-25 05:33:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 05:33:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 167. [2020-09-25 05:33:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 05:33:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2020-09-25 05:33:09,817 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 71 [2020-09-25 05:33:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:09,817 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2020-09-25 05:33:09,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:33:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2020-09-25 05:33:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:33:09,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:09,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:09,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:09,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 05:33:09,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:09,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181515693] [2020-09-25 05:33:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:11,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:33:11,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2101 [2020-09-25 05:33:11,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:11,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:33:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:33:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:33:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:11,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:11,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:11,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:11,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:12,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:33:12,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:12,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:33:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:12,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:33:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:33:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:33:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:33:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 05:33:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:12,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:33:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:12,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:33:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 05:33:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:12,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:12,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181515693] [2020-09-25 05:33:12,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:12,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:33:12,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418780448] [2020-09-25 05:33:12,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:33:12,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:33:12,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:12,206 INFO L87 Difference]: Start difference. First operand 167 states and 185 transitions. Second operand 12 states. [2020-09-25 05:33:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:13,061 INFO L93 Difference]: Finished difference Result 334 states and 376 transitions. [2020-09-25 05:33:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:33:13,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 05:33:13,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:13,064 INFO L225 Difference]: With dead ends: 334 [2020-09-25 05:33:13,064 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 05:33:13,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-25 05:33:13,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 05:33:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 174. [2020-09-25 05:33:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 05:33:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2020-09-25 05:33:13,086 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 73 [2020-09-25 05:33:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:13,087 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2020-09-25 05:33:13,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:33:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2020-09-25 05:33:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 05:33:13,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:13,089 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:13,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:33:13,090 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-25 05:33:13,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:13,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215201106] [2020-09-25 05:33:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 05:33:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-25 05:33:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:33:18,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:18,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:33:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:33:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:33:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:18,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:18,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:18,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:18,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:18,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:18,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:33:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-09-25 05:33:18,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:18,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:33:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:33:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:33:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:18,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:33:18,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:33:18,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:33:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:33:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:33:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:18,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:33:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:18,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 05:33:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 05:33:18,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215201106] [2020-09-25 05:33:18,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:18,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 05:33:18,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211607383] [2020-09-25 05:33:18,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:33:18,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:33:18,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:33:18,936 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand 13 states. [2020-09-25 05:33:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:19,998 INFO L93 Difference]: Finished difference Result 346 states and 395 transitions. [2020-09-25 05:33:19,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:33:19,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-09-25 05:33:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:20,002 INFO L225 Difference]: With dead ends: 346 [2020-09-25 05:33:20,002 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 05:33:20,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-09-25 05:33:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 05:33:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 185. [2020-09-25 05:33:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-25 05:33:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 206 transitions. [2020-09-25 05:33:20,023 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 206 transitions. Word has length 79 [2020-09-25 05:33:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:20,024 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 206 transitions. [2020-09-25 05:33:20,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:33:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 206 transitions. [2020-09-25 05:33:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 05:33:20,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:20,026 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:20,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:33:20,027 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:20,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:20,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-09-25 05:33:20,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:20,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759828998] [2020-09-25 05:33:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 05:33:25,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:33:25,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:33:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:33:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:33:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:25,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:33:25,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:33:25,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:33:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 05:33:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:33:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 05:33:25,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:33:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:33:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:33:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:33:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 05:33:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:25,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:33:25,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:25,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759828998] [2020-09-25 05:33:25,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:25,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:25,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157243048] [2020-09-25 05:33:25,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:25,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:25,564 INFO L87 Difference]: Start difference. First operand 185 states and 206 transitions. Second operand 16 states. [2020-09-25 05:33:27,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:27,183 INFO L93 Difference]: Finished difference Result 342 states and 384 transitions. [2020-09-25 05:33:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 05:33:27,184 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2020-09-25 05:33:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:27,188 INFO L225 Difference]: With dead ends: 342 [2020-09-25 05:33:27,188 INFO L226 Difference]: Without dead ends: 242 [2020-09-25 05:33:27,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:33:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-25 05:33:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 171. [2020-09-25 05:33:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-25 05:33:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 188 transitions. [2020-09-25 05:33:27,205 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 188 transitions. Word has length 81 [2020-09-25 05:33:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:27,205 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 188 transitions. [2020-09-25 05:33:27,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 188 transitions. [2020-09-25 05:33:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 05:33:27,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:27,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:27,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:33:27,207 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:27,208 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 05:33:27,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:27,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002696309] [2020-09-25 05:33:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 05:33:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:33:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:33:32,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:33:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:33:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:33:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:33:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:33:32,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:33:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:33:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:33:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:32,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:32,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:33:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:32,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:32,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:33:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 05:33:32,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002696309] [2020-09-25 05:33:32,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:32,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 05:33:32,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322561322] [2020-09-25 05:33:32,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:33:32,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:33:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:33:32,571 INFO L87 Difference]: Start difference. First operand 171 states and 188 transitions. Second operand 13 states. [2020-09-25 05:33:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:33,465 INFO L93 Difference]: Finished difference Result 221 states and 245 transitions. [2020-09-25 05:33:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:33:33,465 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-09-25 05:33:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:33,468 INFO L225 Difference]: With dead ends: 221 [2020-09-25 05:33:33,469 INFO L226 Difference]: Without dead ends: 215 [2020-09-25 05:33:33,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:33:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-25 05:33:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 191. [2020-09-25 05:33:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 05:33:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2020-09-25 05:33:33,485 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 82 [2020-09-25 05:33:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:33,485 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2020-09-25 05:33:33,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:33:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2020-09-25 05:33:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 05:33:33,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:33,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:33,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:33:33,487 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:33,488 INFO L82 PathProgramCache]: Analyzing trace with hash 903548806, now seen corresponding path program 1 times [2020-09-25 05:33:33,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:33,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587829452] [2020-09-25 05:33:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:33:36,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2718 [2020-09-25 05:33:36,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:33:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:33:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:33:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:36,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:33:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:33:36,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:33:36,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:33:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 05:33:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:33:36,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:33:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:33:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:33:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:33:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:33:36,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:33:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 05:33:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:36,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587829452] [2020-09-25 05:33:36,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:36,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:33:36,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859658316] [2020-09-25 05:33:36,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:33:36,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:33:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:33:36,540 INFO L87 Difference]: Start difference. First operand 191 states and 213 transitions. Second operand 14 states. [2020-09-25 05:33:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:37,793 INFO L93 Difference]: Finished difference Result 371 states and 421 transitions. [2020-09-25 05:33:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:33:37,794 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-09-25 05:33:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:37,796 INFO L225 Difference]: With dead ends: 371 [2020-09-25 05:33:37,796 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 05:33:37,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-09-25 05:33:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 05:33:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 167. [2020-09-25 05:33:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 05:33:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2020-09-25 05:33:37,818 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 83 [2020-09-25 05:33:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:37,818 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2020-09-25 05:33:37,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:33:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2020-09-25 05:33:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 05:33:37,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:37,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:37,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:33:37,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1804595944, now seen corresponding path program 1 times [2020-09-25 05:33:37,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:37,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246204520] [2020-09-25 05:33:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking...