/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=NARROWEST --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-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:05:58,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:05:58,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:05:58,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:05:58,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:05:58,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:05:58,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:05:58,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:05:58,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:05:58,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:05:58,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:05:58,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:05:58,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:05:58,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:05:58,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:05:58,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:05:58,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:05:58,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:05:58,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:05:58,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:05:58,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:05:58,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:05:58,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:05:58,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:05:58,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:05:58,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:05:58,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:05:58,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:05:58,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:05:58,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:05:58,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:05:58,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:05:58,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:05:58,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:05:58,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:05:58,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:05:58,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:05:58,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:05:58,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:05:58,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:05:58,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:05:58,680 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 02:05:58,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:05:58,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:05:58,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:05:58,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:05:58,731 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:05:58,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:05:58,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:05:58,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:05:58,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:05:58,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:05:58,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:05:58,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:05:58,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:05:58,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:05:58,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:05:58,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:05:58,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:05:58,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:05:58,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:05:58,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:05:58,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:05:58,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:05:58,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:05:58,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:05:58,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:05:58,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:05:58,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:05:58,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:05:58,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:05:58,738 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:05:59,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:05:59,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:05:59,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:05:59,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:05:59,227 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:05:59,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-09-25 02:05:59,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a9a29f4b/1b353b0c18204b96a44820bef4ba3f5a/FLAGcc4086765 [2020-09-25 02:05:59,963 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:05:59,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-09-25 02:05:59,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a9a29f4b/1b353b0c18204b96a44820bef4ba3f5a/FLAGcc4086765 [2020-09-25 02:06:00,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a9a29f4b/1b353b0c18204b96a44820bef4ba3f5a [2020-09-25 02:06:00,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:06:00,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:06:00,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:00,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:06:00,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:06:00,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ca24e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00, skipping insertion in model container [2020-09-25 02:06:00,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:06:00,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:06:00,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:00,793 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:06:00,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:00,909 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:06:00,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00 WrapperNode [2020-09-25 02:06:00,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:00,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:06:00,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:06:00,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:06:00,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (1/1) ... [2020-09-25 02:06:00,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:06:00,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:06:00,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:06:00,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:06:00,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (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 02:06:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:06:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:06:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 02:06:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 02:06:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 02:06:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 02:06:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 02:06:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 02:06:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:06:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:06:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:06:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:06:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:06:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:06:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:06:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:06:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:06:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:06:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:06:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:06:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:06:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:06:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:06:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:06:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:06:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:06:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:06:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 02:06:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 02:06:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 02:06:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 02:06:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 02:06:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:06:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:06:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:06:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:06:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:06:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:06:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:06:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:06:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:06:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:06:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:06:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:06:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:06:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:06:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:06:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:06:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:06:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:06:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:06:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:06:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:06:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:06:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:06:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:06:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:06:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:06:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:06:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:06:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:06:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:06:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:06:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:06:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:06:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:06:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:06:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:06:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:06:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:06:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:06:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:06:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:06:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:06:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:06:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:06:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:06:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:06:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:06:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:06:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:06:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:06:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:06:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:06:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:06:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:06:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:06:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:06:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:06:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:06:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:06:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:06:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:06:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:06:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:06:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:06:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:06:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:06:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:06:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:06:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 02:06:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:06:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:06:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:06:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:06:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:06:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:06:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:06:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:06:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:06:01,471 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 02:06:01,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:06:01,669 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 02:06:01,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:01 BoogieIcfgContainer [2020-09-25 02:06:01,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:06:01,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:06:01,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:06:01,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:06:01,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:06:00" (1/3) ... [2020-09-25 02:06:01,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63746b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:01, skipping insertion in model container [2020-09-25 02:06:01,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:00" (2/3) ... [2020-09-25 02:06:01,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63746b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:01, skipping insertion in model container [2020-09-25 02:06:01,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:01" (3/3) ... [2020-09-25 02:06:01,684 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-09-25 02:06:01,695 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:06:01,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:06:01,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:06:01,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:06:01,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:06:01,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:06:01,756 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:06:01,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:06:01,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:06:01,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:06:01,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:06:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-25 02:06:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 02:06:01,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:01,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:01,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-09-25 02:06:01,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:01,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322730203] [2020-09-25 02:06:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:02,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:06:02,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:06:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 02:06:02,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:02,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:02,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:06:02,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:02,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:06:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:02,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:06:02,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:02,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:02,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322730203] [2020-09-25 02:06:02,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:02,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:06:02,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516237972] [2020-09-25 02:06:02,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:06:02,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:06:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:06:02,664 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-09-25 02:06:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:02,879 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2020-09-25 02:06:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:06:02,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-25 02:06:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:02,893 INFO L225 Difference]: With dead ends: 110 [2020-09-25 02:06:02,893 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 02:06:02,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:06:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 02:06:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-25 02:06:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 02:06:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 02:06:02,943 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 22 [2020-09-25 02:06:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:02,944 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 02:06:02,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:06:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 02:06:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:06:02,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:02,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:02,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:06:02,947 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1237633361, now seen corresponding path program 1 times [2020-09-25 02:06:02,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:02,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712943581] [2020-09-25 02:06:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:02,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 02:06:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 02:06:03,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:06:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:06:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:06:03,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:03,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712943581] [2020-09-25 02:06:03,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:03,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:03,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094549768] [2020-09-25 02:06:03,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:03,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:03,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:03,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:03,202 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-09-25 02:06:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:03,494 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-25 02:06:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:06:03,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-25 02:06:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:03,497 INFO L225 Difference]: With dead ends: 134 [2020-09-25 02:06:03,498 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 02:06:03,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:06:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 02:06:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-09-25 02:06:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:06:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-09-25 02:06:03,512 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2020-09-25 02:06:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:03,513 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-09-25 02:06:03,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-09-25 02:06:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:06:03,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:03,515 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:03,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:06:03,515 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:03,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:03,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-09-25 02:06:03,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:03,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729135517] [2020-09-25 02:06:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:03,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:06:03,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 02:06:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:06:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:06:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:03,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:03,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:06:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:03,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729135517] [2020-09-25 02:06:03,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:03,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:03,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159841432] [2020-09-25 02:06:03,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:03,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:03,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:03,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:03,801 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-09-25 02:06:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:04,096 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-09-25 02:06:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:06:04,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:06:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:04,099 INFO L225 Difference]: With dead ends: 137 [2020-09-25 02:06:04,099 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 02:06:04,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:06:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 02:06:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-09-25 02:06:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 02:06:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-09-25 02:06:04,121 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-09-25 02:06:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:04,122 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-09-25 02:06:04,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-09-25 02:06:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:06:04,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:04,125 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:04,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:06:04,127 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:04,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-09-25 02:06:04,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:04,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261300075] [2020-09-25 02:06:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:04,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:06:04,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 02:06:04,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:06:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:06:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:06:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:04,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261300075] [2020-09-25 02:06:04,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:04,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:04,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151001339] [2020-09-25 02:06:04,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:04,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:04,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:04,423 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-09-25 02:06:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:04,632 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-25 02:06:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:06:04,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:06:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:04,634 INFO L225 Difference]: With dead ends: 119 [2020-09-25 02:06:04,634 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 02:06:04,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:06:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 02:06:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-09-25 02:06:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 02:06:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 02:06:04,642 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-09-25 02:06:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:04,642 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 02:06:04,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 02:06:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 02:06:04,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:04,644 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:04,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:06:04,645 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-09-25 02:06:04,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:04,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759076135] [2020-09-25 02:06:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:05,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:06:05,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:06:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-09-25 02:06:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:06:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:06:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:06,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:06,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:06,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:06:06,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:06,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759076135] [2020-09-25 02:06:06,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:06,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:06:06,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890414435] [2020-09-25 02:06:06,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:06:06,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:06:06,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:06:06,062 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-09-25 02:06:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:06,862 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2020-09-25 02:06:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:06:06,863 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-09-25 02:06:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:06,865 INFO L225 Difference]: With dead ends: 157 [2020-09-25 02:06:06,865 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 02:06:06,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:06:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 02:06:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 78. [2020-09-25 02:06:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 02:06:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 02:06:06,878 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 41 [2020-09-25 02:06:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:06,878 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 02:06:06,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:06:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 02:06:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 02:06:06,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:06,880 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:06,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:06:06,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-09-25 02:06:06,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:06,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127580089] [2020-09-25 02:06:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:07,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:07,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:06:07,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:06:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-09-25 02:06:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:06:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:06:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:06:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:08,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:08,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:08,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:08,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:06:08,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:08,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127580089] [2020-09-25 02:06:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:08,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:06:08,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643240050] [2020-09-25 02:06:08,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:06:08,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:06:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:06:08,022 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 11 states. [2020-09-25 02:06:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:08,600 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-09-25 02:06:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:06:08,601 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-25 02:06:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:08,603 INFO L225 Difference]: With dead ends: 156 [2020-09-25 02:06:08,605 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 02:06:08,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:06:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 02:06:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 100. [2020-09-25 02:06:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 02:06:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-09-25 02:06:08,627 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 41 [2020-09-25 02:06:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:08,627 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-09-25 02:06:08,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:06:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-09-25 02:06:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 02:06:08,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:08,635 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:08,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:06:08,635 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-09-25 02:06:08,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:08,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162872639] [2020-09-25 02:06:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:08,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:09,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:09,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:06:09,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-25 02:06:09,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:06:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:06:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:09,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:06:09,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:09,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:09,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162872639] [2020-09-25 02:06:09,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:09,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:06:09,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480309822] [2020-09-25 02:06:09,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:06:09,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:06:09,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:06:09,726 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 16 states. [2020-09-25 02:06:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:10,836 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-09-25 02:06:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 02:06:10,836 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 02:06:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:10,838 INFO L225 Difference]: With dead ends: 165 [2020-09-25 02:06:10,839 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 02:06:10,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:06:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 02:06:10,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 104. [2020-09-25 02:06:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 02:06:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-09-25 02:06:10,863 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 47 [2020-09-25 02:06:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:10,863 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-09-25 02:06:10,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:06:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-09-25 02:06:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 02:06:10,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:10,865 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:10,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:06:10,866 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:10,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1893706375, now seen corresponding path program 1 times [2020-09-25 02:06:10,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:10,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273373748] [2020-09-25 02:06:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:11,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:11,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:06:11,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-09-25 02:06:11,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:06:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:06:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:11,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:06:11,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:11,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273373748] [2020-09-25 02:06:11,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:11,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:06:11,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394079954] [2020-09-25 02:06:11,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:06:11,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:11,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:06:11,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:06:11,816 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 16 states. [2020-09-25 02:06:12,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:12,997 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-09-25 02:06:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 02:06:12,998 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 02:06:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:13,000 INFO L225 Difference]: With dead ends: 179 [2020-09-25 02:06:13,001 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 02:06:13,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:06:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 02:06:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 113. [2020-09-25 02:06:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 02:06:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-25 02:06:13,010 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 47 [2020-09-25 02:06:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:13,010 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-25 02:06:13,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:06:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-25 02:06:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 02:06:13,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:13,012 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:13,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:06:13,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:13,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:13,012 INFO L82 PathProgramCache]: Analyzing trace with hash -857024599, now seen corresponding path program 1 times [2020-09-25 02:06:13,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:13,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013881567] [2020-09-25 02:06:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:14,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:14,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:06:14,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:06:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 02:06:14,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:14,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:06:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:06:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 02:06:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:14,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:14,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:14,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:06:14,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:14,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013881567] [2020-09-25 02:06:14,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:14,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:06:14,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479011322] [2020-09-25 02:06:14,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:06:14,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:06:14,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:06:14,315 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 9 states. [2020-09-25 02:06:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:14,685 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2020-09-25 02:06:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:06:14,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-25 02:06:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:14,687 INFO L225 Difference]: With dead ends: 171 [2020-09-25 02:06:14,687 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 02:06:14,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:06:14,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 02:06:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 113. [2020-09-25 02:06:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 02:06:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-25 02:06:14,694 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 47 [2020-09-25 02:06:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:14,695 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-25 02:06:14,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:06:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-25 02:06:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:06:14,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:14,696 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:14,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:06:14,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:14,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:14,697 INFO L82 PathProgramCache]: Analyzing trace with hash 294895633, now seen corresponding path program 2 times [2020-09-25 02:06:14,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:14,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28511632] [2020-09-25 02:06:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:16,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:06:16,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:06:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-09-25 02:06:16,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:06:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:06:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:16,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:16,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:16,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:16,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:06:16,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:16,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:16,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28511632] [2020-09-25 02:06:16,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:16,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:06:16,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546019616] [2020-09-25 02:06:16,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:06:16,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:06:16,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:06:16,790 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 20 states. [2020-09-25 02:06:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:17,847 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-09-25 02:06:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 02:06:17,848 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-09-25 02:06:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:17,849 INFO L225 Difference]: With dead ends: 183 [2020-09-25 02:06:17,850 INFO L226 Difference]: Without dead ends: 170 [2020-09-25 02:06:17,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 02:06:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-25 02:06:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2020-09-25 02:06:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 02:06:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2020-09-25 02:06:17,858 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 52 [2020-09-25 02:06:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:17,858 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2020-09-25 02:06:17,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:06:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2020-09-25 02:06:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:06:17,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:17,860 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:17,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:06:17,860 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1689189507, now seen corresponding path program 1 times [2020-09-25 02:06:17,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:17,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837703385] [2020-09-25 02:06:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:17,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:06:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:06:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-09-25 02:06:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:06:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:06:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:19,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:06:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:19,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837703385] [2020-09-25 02:06:19,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:19,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:06:19,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672592474] [2020-09-25 02:06:19,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:06:19,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:19,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:06:19,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:06:19,524 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 20 states. [2020-09-25 02:06:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:20,783 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2020-09-25 02:06:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 02:06:20,783 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-09-25 02:06:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:20,787 INFO L225 Difference]: With dead ends: 225 [2020-09-25 02:06:20,787 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 02:06:20,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 02:06:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 02:06:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 143. [2020-09-25 02:06:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-25 02:06:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2020-09-25 02:06:20,796 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 52 [2020-09-25 02:06:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:20,796 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2020-09-25 02:06:20,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:06:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2020-09-25 02:06:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:06:20,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:20,797 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:20,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:06:20,798 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:20,798 INFO L82 PathProgramCache]: Analyzing trace with hash -906161327, now seen corresponding path program 2 times [2020-09-25 02:06:20,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:20,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606216213] [2020-09-25 02:06:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:22,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:22,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:06:22,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:06:22,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-09-25 02:06:22,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:22,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:06:22,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:22,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:06:22,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:23,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:23,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:06:23,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:23,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606216213] [2020-09-25 02:06:23,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:23,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:06:23,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139175461] [2020-09-25 02:06:23,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:06:23,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:23,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:06:23,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:06:23,127 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 20 states. [2020-09-25 02:06:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:24,645 INFO L93 Difference]: Finished difference Result 238 states and 255 transitions. [2020-09-25 02:06:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 02:06:24,645 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-09-25 02:06:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:24,647 INFO L225 Difference]: With dead ends: 238 [2020-09-25 02:06:24,647 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 02:06:24,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=289, Invalid=1117, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 02:06:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 02:06:24,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 145. [2020-09-25 02:06:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 02:06:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-09-25 02:06:24,656 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 52 [2020-09-25 02:06:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:24,656 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-09-25 02:06:24,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:06:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-09-25 02:06:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 02:06:24,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:24,658 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:24,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:06:24,658 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:24,658 INFO L82 PathProgramCache]: Analyzing trace with hash 219391251, now seen corresponding path program 1 times [2020-09-25 02:06:24,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:24,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816830690] [2020-09-25 02:06:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:25,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:25,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:06:25,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:25,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 02:06:25,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:06:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:06:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:25,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:25,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:25,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:06:25,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:25,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816830690] [2020-09-25 02:06:25,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:25,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:06:25,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095617373] [2020-09-25 02:06:25,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:06:25,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:25,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:06:25,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:06:25,432 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 16 states. [2020-09-25 02:06:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:26,595 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2020-09-25 02:06:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 02:06:26,596 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 02:06:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:26,598 INFO L225 Difference]: With dead ends: 211 [2020-09-25 02:06:26,598 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 02:06:26,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:06:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 02:06:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 145. [2020-09-25 02:06:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 02:06:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-09-25 02:06:26,610 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 53 [2020-09-25 02:06:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:26,610 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-09-25 02:06:26,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:06:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-09-25 02:06:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 02:06:26,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:26,612 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:26,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 02:06:26,612 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:26,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1256073027, now seen corresponding path program 2 times [2020-09-25 02:06:26,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:26,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206805429] [2020-09-25 02:06:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:06:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-25 02:06:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:06:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:06:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:27,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:27,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:27,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:06:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:27,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206805429] [2020-09-25 02:06:27,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:27,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:06:27,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224241568] [2020-09-25 02:06:27,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:06:27,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:27,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:06:27,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:06:27,474 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 16 states. [2020-09-25 02:06:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:28,471 INFO L93 Difference]: Finished difference Result 193 states and 206 transitions. [2020-09-25 02:06:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:06:28,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 02:06:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:28,473 INFO L225 Difference]: With dead ends: 193 [2020-09-25 02:06:28,473 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 02:06:28,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 02:06:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 02:06:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 136. [2020-09-25 02:06:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-25 02:06:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 146 transitions. [2020-09-25 02:06:28,483 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 146 transitions. Word has length 53 [2020-09-25 02:06:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:28,484 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 146 transitions. [2020-09-25 02:06:28,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:06:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 146 transitions. [2020-09-25 02:06:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 02:06:28,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:28,485 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:28,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 02:06:28,485 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash 164878513, now seen corresponding path program 2 times [2020-09-25 02:06:28,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:28,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669279270] [2020-09-25 02:06:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:28,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:06:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-09-25 02:06:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:06:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:06:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:29,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669279270] [2020-09-25 02:06:29,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:29,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:06:29,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107659467] [2020-09-25 02:06:29,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:06:29,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:29,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:06:29,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:06:29,277 INFO L87 Difference]: Start difference. First operand 136 states and 146 transitions. Second operand 16 states. [2020-09-25 02:06:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:30,468 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2020-09-25 02:06:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:06:30,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 02:06:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:30,470 INFO L225 Difference]: With dead ends: 183 [2020-09-25 02:06:30,471 INFO L226 Difference]: Without dead ends: 157 [2020-09-25 02:06:30,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 02:06:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-25 02:06:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-09-25 02:06:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 02:06:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2020-09-25 02:06:30,478 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 53 [2020-09-25 02:06:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:30,479 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2020-09-25 02:06:30,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:06:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2020-09-25 02:06:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 02:06:30,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:30,480 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] [2020-09-25 02:06:30,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 02:06:30,480 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1525845127, now seen corresponding path program 3 times [2020-09-25 02:06:30,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:30,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837510952] [2020-09-25 02:06:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:06:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-09-25 02:06:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:06:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:06:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:06:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:32,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:32,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:32,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:06:32,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:32,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837510952] [2020-09-25 02:06:32,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:06:32,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 02:06:32,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890008530] [2020-09-25 02:06:32,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 02:06:32,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 02:06:32,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-09-25 02:06:32,293 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 22 states. [2020-09-25 02:06:32,953 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-09-25 02:06:33,669 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-25 02:06:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:34,629 INFO L93 Difference]: Finished difference Result 213 states and 227 transitions. [2020-09-25 02:06:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 02:06:34,630 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-09-25 02:06:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:34,632 INFO L225 Difference]: With dead ends: 213 [2020-09-25 02:06:34,632 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 02:06:34,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=372, Invalid=2078, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 02:06:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 02:06:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 144. [2020-09-25 02:06:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 02:06:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-09-25 02:06:34,641 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 58 [2020-09-25 02:06:34,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:34,642 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-09-25 02:06:34,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 02:06:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-09-25 02:06:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 02:06:34,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:34,643 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:06:34,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 02:06:34,643 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1049071675, now seen corresponding path program 1 times [2020-09-25 02:06:34,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:34,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282165138] [2020-09-25 02:06:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:06:34,664 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:06:34,664 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:06:34,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 02:06:34,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:06:34 BoogieIcfgContainer [2020-09-25 02:06:34,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:06:34,694 INFO L168 Benchmark]: Toolchain (without parser) took 34457.80 ms. Allocated memory was 146.3 MB in the beginning and 466.6 MB in the end (delta: 320.3 MB). Free memory was 100.6 MB in the beginning and 119.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 301.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:34,695 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:06:34,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.85 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.9 MB in the beginning and 171.2 MB in the end (delta: -71.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:34,697 INFO L168 Benchmark]: Boogie Preprocessor took 79.44 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 167.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:34,698 INFO L168 Benchmark]: RCFGBuilder took 684.07 ms. Allocated memory is still 203.9 MB. Free memory was 167.8 MB in the beginning and 119.3 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:34,699 INFO L168 Benchmark]: TraceAbstraction took 33016.50 ms. Allocated memory was 203.9 MB in the beginning and 466.6 MB in the end (delta: 262.7 MB). Free memory was 119.3 MB in the beginning and 119.8 MB in the end (delta: -512.8 kB). Peak memory consumption was 262.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:34,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.85 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.9 MB in the beginning and 171.2 MB in the end (delta: -71.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.44 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 167.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 684.07 ms. Allocated memory is still 203.9 MB. Free memory was 167.8 MB in the beginning and 119.3 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33016.50 ms. Allocated memory was 203.9 MB in the beginning and 466.6 MB in the end (delta: 262.7 MB). Free memory was 119.3 MB in the beginning and 119.8 MB in the end (delta: -512.8 kB). Peak memory consumption was 262.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) [L528] COND FALSE !(t == 0) [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] EXPR p->h [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.9s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 946 SDtfs, 3510 SDslu, 6930 SDs, 0 SdLazy, 6068 SolverSat, 595 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 441 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 787 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 778 NumberOfCodeBlocks, 778 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 704 ConstructedInterpolants, 0 QuantifiedInterpolants, 332361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 24/101 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...