/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:28:55,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:28:55,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:28:55,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:28:55,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:28:55,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:28:55,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:28:55,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:28:55,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:28:55,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:28:55,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:28:55,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:28:55,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:28:55,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:28:55,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:28:55,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:28:55,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:28:55,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:28:55,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:28:55,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:28:55,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:28:55,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:28:55,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:28:55,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:28:55,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:28:55,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:28:55,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:28:55,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:28:55,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:28:55,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:28:55,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:28:55,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:28:55,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:28:55,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:28:55,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:28:55,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:28:55,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:28:55,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:28:55,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:28:55,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:28:55,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:28:55,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:28:55,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:28:55,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:28:55,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:28:55,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:28:55,873 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:28:55,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:28:55,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:28:55,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:28:55,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:28:55,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:28:55,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:28:55,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:28:55,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:28:55,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:28:55,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:28:55,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:28:55,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:28:55,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:28:55,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:28:55,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:28:55,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:28:55,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:28:55,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:28:55,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:28:55,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:28:55,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:28:55,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:28:55,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:28:55,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:28:55,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:28:56,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:28:56,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:28:56,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:28:56,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:28:56,293 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:28:56,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2020-10-14 21:28:56,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de8d37e3/f74dfc3c72be4586bc5351fe6cd8c350/FLAG7c34d2ecd [2020-10-14 21:28:57,397 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:28:57,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2020-10-14 21:28:57,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de8d37e3/f74dfc3c72be4586bc5351fe6cd8c350/FLAG7c34d2ecd [2020-10-14 21:28:57,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de8d37e3/f74dfc3c72be4586bc5351fe6cd8c350 [2020-10-14 21:28:57,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:28:57,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:28:57,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:28:57,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:28:57,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:28:57,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:57" (1/1) ... [2020-10-14 21:28:57,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3add5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:57, skipping insertion in model container [2020-10-14 21:28:57,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:57" (1/1) ... [2020-10-14 21:28:57,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:28:58,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:29:00,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:29:00,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:29:01,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:29:01,052 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:29:01,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01 WrapperNode [2020-10-14 21:29:01,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:29:01,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:29:01,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:29:01,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:29:01,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... [2020-10-14 21:29:01,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:29:01,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:29:01,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:29:01,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:29:01,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:29:01,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:29:01,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:29:01,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:29:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:29:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:29:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:29:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:29:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:29:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:29:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:29:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:29:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:29:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:29:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:29:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:29:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:29:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:29:14,023 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:29:14,023 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:29:14,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:29:14 BoogieIcfgContainer [2020-10-14 21:29:14,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:29:14,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:29:14,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:29:14,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:29:14,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:28:57" (1/3) ... [2020-10-14 21:29:14,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:29:14, skipping insertion in model container [2020-10-14 21:29:14,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:01" (2/3) ... [2020-10-14 21:29:14,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:29:14, skipping insertion in model container [2020-10-14 21:29:14,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:29:14" (3/3) ... [2020-10-14 21:29:14,048 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2020-10-14 21:29:14,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:29:14,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:29:14,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:29:14,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:29:14,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:29:14,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:29:14,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:29:14,137 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:29:14,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:29:14,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:29:14,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:29:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:29:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 21:29:14,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:14,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:14,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:14,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1839105400, now seen corresponding path program 1 times [2020-10-14 21:29:14,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:14,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981401382] [2020-10-14 21:29:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 21:29:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 21:29:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:15,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 21:29:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:29:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:29:15,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:15,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:29:15,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981401382] [2020-10-14 21:29:15,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:29:15,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:29:15,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277804135] [2020-10-14 21:29:15,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:29:15,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:29:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:29:15,232 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:29:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:31,587 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-14 21:29:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:29:31,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-14 21:29:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:31,633 INFO L225 Difference]: With dead ends: 3243 [2020-10-14 21:29:31,634 INFO L226 Difference]: Without dead ends: 2045 [2020-10-14 21:29:31,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:29:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-14 21:29:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-14 21:29:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-14 21:29:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-14 21:29:31,923 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 51 [2020-10-14 21:29:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:31,926 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-14 21:29:31,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:29:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-14 21:29:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 21:29:31,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:31,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:31,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:29:31,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:31,952 INFO L82 PathProgramCache]: Analyzing trace with hash -25289727, now seen corresponding path program 1 times [2020-10-14 21:29:31,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:31,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137806998] [2020-10-14 21:29:31,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:32,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:34,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:34,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:29:34,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2497 [2020-10-14 21:29:34,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:34,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:29:34,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 21:29:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:29:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:34,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:29:34,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:34,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:29:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 21:29:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:34,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:34,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:29:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:29:35,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137806998] [2020-10-14 21:29:35,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:29:35,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:29:35,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946885596] [2020-10-14 21:29:35,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:29:35,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:29:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:29:35,086 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 8 states. [2020-10-14 21:30:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:01,688 INFO L93 Difference]: Finished difference Result 7338 states and 13417 transitions. [2020-10-14 21:30:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:30:01,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-14 21:30:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:01,719 INFO L225 Difference]: With dead ends: 7338 [2020-10-14 21:30:01,720 INFO L226 Difference]: Without dead ends: 5356 [2020-10-14 21:30:01,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:30:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2020-10-14 21:30:01,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5331. [2020-10-14 21:30:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5331 states. [2020-10-14 21:30:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 8095 transitions. [2020-10-14 21:30:01,883 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 8095 transitions. Word has length 120 [2020-10-14 21:30:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:01,883 INFO L479 AbstractCegarLoop]: Abstraction has 5331 states and 8095 transitions. [2020-10-14 21:30:01,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:30:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 8095 transitions. [2020-10-14 21:30:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 21:30:01,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:01,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:30:01,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:30:01,887 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:01,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash 431799949, now seen corresponding path program 1 times [2020-10-14 21:30:01,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:01,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430130586] [2020-10-14 21:30:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:03,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:30:03,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-10-14 21:30:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:03,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:30:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:03,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:03,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:03,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:30:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:03,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:04,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:30:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 21:30:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:04,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:30:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:04,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430130586] [2020-10-14 21:30:04,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:04,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:30:04,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017280996] [2020-10-14 21:30:04,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:04,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:04,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:04,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:04,470 INFO L87 Difference]: Start difference. First operand 5331 states and 8095 transitions. Second operand 7 states. [2020-10-14 21:30:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:31,623 INFO L93 Difference]: Finished difference Result 14367 states and 22908 transitions. [2020-10-14 21:30:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:30:31,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 21:30:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:31,676 INFO L225 Difference]: With dead ends: 14367 [2020-10-14 21:30:31,677 INFO L226 Difference]: Without dead ends: 9042 [2020-10-14 21:30:31,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:30:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9042 states. [2020-10-14 21:30:31,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9042 to 8761. [2020-10-14 21:30:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8761 states. [2020-10-14 21:30:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8761 states to 8761 states and 12159 transitions. [2020-10-14 21:30:31,993 INFO L78 Accepts]: Start accepts. Automaton has 8761 states and 12159 transitions. Word has length 126 [2020-10-14 21:30:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:31,999 INFO L479 AbstractCegarLoop]: Abstraction has 8761 states and 12159 transitions. [2020-10-14 21:30:31,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:30:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 8761 states and 12159 transitions. [2020-10-14 21:30:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 21:30:32,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:32,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:30:32,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:30:32,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1856995511, now seen corresponding path program 1 times [2020-10-14 21:30:32,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:32,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298241711] [2020-10-14 21:30:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:32,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:30:32,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:30:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-14 21:30:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:32,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:30:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:32,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:32,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:32,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:32,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:30:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:32,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:30:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:30:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:33,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:30:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:33,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298241711] [2020-10-14 21:30:33,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:33,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:30:33,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770390883] [2020-10-14 21:30:33,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:33,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:33,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:33,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:33,294 INFO L87 Difference]: Start difference. First operand 8761 states and 12159 transitions. Second operand 7 states. [2020-10-14 21:30:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:55,066 INFO L93 Difference]: Finished difference Result 18771 states and 26044 transitions. [2020-10-14 21:30:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:30:55,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-10-14 21:30:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:55,118 INFO L225 Difference]: With dead ends: 18771 [2020-10-14 21:30:55,119 INFO L226 Difference]: Without dead ends: 10016 [2020-10-14 21:30:55,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:30:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2020-10-14 21:30:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 9676. [2020-10-14 21:30:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9676 states. [2020-10-14 21:30:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9676 states to 9676 states and 13231 transitions. [2020-10-14 21:30:55,436 INFO L78 Accepts]: Start accepts. Automaton has 9676 states and 13231 transitions. Word has length 156 [2020-10-14 21:30:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:55,440 INFO L479 AbstractCegarLoop]: Abstraction has 9676 states and 13231 transitions. [2020-10-14 21:30:55,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:30:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9676 states and 13231 transitions. [2020-10-14 21:30:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 21:30:55,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:55,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:30:55,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:30:55,445 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2116741795, now seen corresponding path program 1 times [2020-10-14 21:30:55,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:55,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926805507] [2020-10-14 21:30:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:57,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:30:57,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:30:57,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-14 21:30:57,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:57,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:30:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-10-14 21:30:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:57,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:57,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:30:57,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:57,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:30:57,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 21:30:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:57,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:30:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:30:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:57,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926805507] [2020-10-14 21:30:57,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:57,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:30:57,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739846953] [2020-10-14 21:30:57,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:57,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:57,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:57,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:57,936 INFO L87 Difference]: Start difference. First operand 9676 states and 13231 transitions. Second operand 7 states. [2020-10-14 21:31:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:17,668 INFO L93 Difference]: Finished difference Result 18945 states and 26348 transitions. [2020-10-14 21:31:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:31:17,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-14 21:31:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:17,724 INFO L225 Difference]: With dead ends: 18945 [2020-10-14 21:31:17,725 INFO L226 Difference]: Without dead ends: 10078 [2020-10-14 21:31:17,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:31:17,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10078 states. [2020-10-14 21:31:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10078 to 9677. [2020-10-14 21:31:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9677 states. [2020-10-14 21:31:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9677 states to 9677 states and 13177 transitions. [2020-10-14 21:31:17,982 INFO L78 Accepts]: Start accepts. Automaton has 9677 states and 13177 transitions. Word has length 166 [2020-10-14 21:31:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:17,982 INFO L479 AbstractCegarLoop]: Abstraction has 9677 states and 13177 transitions. [2020-10-14 21:31:17,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 9677 states and 13177 transitions. [2020-10-14 21:31:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 21:31:17,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:17,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:31:17,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:31:17,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash 27800384, now seen corresponding path program 1 times [2020-10-14 21:31:17,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:17,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876323460] [2020-10-14 21:31:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 21:31:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-14 21:31:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:18,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:31:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 21:31:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:19,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:31:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:19,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:19,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:19,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:19,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:31:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 21:31:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:19,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:31:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:31:19,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876323460] [2020-10-14 21:31:19,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:19,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:31:19,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179295656] [2020-10-14 21:31:19,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:31:19,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:19,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:31:19,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:31:19,676 INFO L87 Difference]: Start difference. First operand 9677 states and 13177 transitions. Second operand 5 states. [2020-10-14 21:31:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:48,667 INFO L93 Difference]: Finished difference Result 24472 states and 35178 transitions. [2020-10-14 21:31:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:31:48,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-14 21:31:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:48,745 INFO L225 Difference]: With dead ends: 24472 [2020-10-14 21:31:48,745 INFO L226 Difference]: Without dead ends: 15604 [2020-10-14 21:31:48,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:31:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15604 states. [2020-10-14 21:31:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15604 to 15562. [2020-10-14 21:31:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15562 states. [2020-10-14 21:31:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15562 states to 15562 states and 20388 transitions. [2020-10-14 21:31:49,167 INFO L78 Accepts]: Start accepts. Automaton has 15562 states and 20388 transitions. Word has length 180 [2020-10-14 21:31:49,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:49,168 INFO L479 AbstractCegarLoop]: Abstraction has 15562 states and 20388 transitions. [2020-10-14 21:31:49,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:31:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 15562 states and 20388 transitions. [2020-10-14 21:31:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 21:31:49,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:49,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:31:49,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:31:49,177 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash -118923906, now seen corresponding path program 1 times [2020-10-14 21:31:49,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:49,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559552468] [2020-10-14 21:31:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:51,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:51,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 21:31:51,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:31:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-14 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:31:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:31:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:51,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:51,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:31:51,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:51,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:51,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:31:51,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 21:31:51,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:51,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:31:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:31:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:52,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:52,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:31:52,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 21:31:52,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:52,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:52,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:31:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:31:52,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559552468] [2020-10-14 21:31:52,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:52,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:31:52,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975023898] [2020-10-14 21:31:52,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:52,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:52,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:52,558 INFO L87 Difference]: Start difference. First operand 15562 states and 20388 transitions. Second operand 7 states. [2020-10-14 21:32:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:46,985 INFO L93 Difference]: Finished difference Result 35116 states and 49402 transitions. [2020-10-14 21:32:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:32:46,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 21:32:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:47,098 INFO L225 Difference]: With dead ends: 35116 [2020-10-14 21:32:47,098 INFO L226 Difference]: Without dead ends: 25311 [2020-10-14 21:32:47,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:32:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25311 states. [2020-10-14 21:32:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25311 to 24278. [2020-10-14 21:32:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24278 states. [2020-10-14 21:32:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24278 states to 24278 states and 30837 transitions. [2020-10-14 21:32:47,656 INFO L78 Accepts]: Start accepts. Automaton has 24278 states and 30837 transitions. Word has length 270 [2020-10-14 21:32:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:47,657 INFO L479 AbstractCegarLoop]: Abstraction has 24278 states and 30837 transitions. [2020-10-14 21:32:47,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:32:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 24278 states and 30837 transitions. [2020-10-14 21:32:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-14 21:32:47,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:47,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:47,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:32:47,664 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1148236102, now seen corresponding path program 1 times [2020-10-14 21:32:47,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:47,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245029363] [2020-10-14 21:32:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:48,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:48,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 21:32:48,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-14 21:32:48,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:48,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:32:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:32:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:49,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:49,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:32:49,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:49,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:32:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:32:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:32:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 21:32:49,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:49,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:32:49,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:32:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:49,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:49,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:32:49,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 21:32:49,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:49,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:32:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:32:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:32:49,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245029363] [2020-10-14 21:32:49,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:49,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:32:49,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166897052] [2020-10-14 21:32:49,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:49,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:49,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:49,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:49,976 INFO L87 Difference]: Start difference. First operand 24278 states and 30837 transitions. Second operand 7 states.