/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/Problem19_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:12:19,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:12:19,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:12:19,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:12:19,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:12:19,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:12:19,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:12:19,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:12:19,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:12:19,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:12:19,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:12:19,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:12:19,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:12:19,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:12:19,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:12:19,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:12:19,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:12:19,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:12:19,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:12:19,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:12:19,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:12:19,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:12:19,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:12:19,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:12:19,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:12:19,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:12:19,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:12:19,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:12:19,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:12:19,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:12:19,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:12:19,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:12:19,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:12:19,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:12:19,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:12:19,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:12:19,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:12:19,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:12:19,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:12:19,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:12:19,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:12:19,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:12:19,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:12:19,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:12:19,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:12:19,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:12:19,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:12:19,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:12:19,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:12:19,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:12:19,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:12:19,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:12:19,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:12:19,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:12:19,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:12:19,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:12:19,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:12:19,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:12:19,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:12:19,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:12:19,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:12:19,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:12:19,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:12:19,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:12:19,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:12:19,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:12:19,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:12:19,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:12:19,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:12:19,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:12:19,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:12:19,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:12:20,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:12:20,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:12:20,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:12:20,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:12:20,233 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:12:20,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58.c [2020-10-14 23:12:20,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6cc843eb/0bd1f7c9b8de46678882acfe16fb86f2/FLAG639b6459c [2020-10-14 23:12:21,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:12:21,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label58.c [2020-10-14 23:12:21,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6cc843eb/0bd1f7c9b8de46678882acfe16fb86f2/FLAG639b6459c [2020-10-14 23:12:21,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6cc843eb/0bd1f7c9b8de46678882acfe16fb86f2 [2020-10-14 23:12:21,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:12:21,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:12:21,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:12:21,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:12:21,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:12:21,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:21" (1/1) ... [2020-10-14 23:12:21,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bf5eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:21, skipping insertion in model container [2020-10-14 23:12:21,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:21" (1/1) ... [2020-10-14 23:12:21,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:12:22,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:12:24,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:12:24,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:12:25,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:12:25,632 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:12:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25 WrapperNode [2020-10-14 23:12:25,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:12:25,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:12:25,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:12:25,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:12:25,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:25,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:25,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:25,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:25,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:26,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:26,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... [2020-10-14 23:12:26,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:12:26,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:12:26,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:12:26,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:12:26,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:12:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:12:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:12:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:12:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:12:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:12:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:12:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:12:26,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:12:26,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:12:26,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:12:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:12:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:12:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:12:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:12:26,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:12:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:12:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:12:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:12:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:12:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:12:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:12:40,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:12:40,811 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:12:40,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:40 BoogieIcfgContainer [2020-10-14 23:12:40,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:12:40,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:12:40,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:12:40,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:12:40,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:12:21" (1/3) ... [2020-10-14 23:12:40,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4efee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:40, skipping insertion in model container [2020-10-14 23:12:40,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:25" (2/3) ... [2020-10-14 23:12:40,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4efee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:40, skipping insertion in model container [2020-10-14 23:12:40,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:40" (3/3) ... [2020-10-14 23:12:40,855 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label58.c [2020-10-14 23:12:40,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:12:40,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:12:40,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:12:40,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:12:40,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:12:40,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:12:40,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:12:40,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:12:40,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:12:40,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:12:40,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:12:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:12:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:12:41,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:41,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:12:41,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2053208436, now seen corresponding path program 1 times [2020-10-14 23:12:41,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:41,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910806395] [2020-10-14 23:12:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:12:41,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 23:12:41,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:41,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:12:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:12:41,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:41,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:12:41,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:41,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:12:41,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910806395] [2020-10-14 23:12:41,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:41,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:12:41,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039853790] [2020-10-14 23:12:41,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:12:41,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:12:41,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:12:41,877 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:13:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:13:10,911 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 23:13:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:13:10,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:13:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:13:10,974 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 23:13:10,974 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 23:13:10,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:13:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 23:13:11,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 23:13:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 23:13:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 23:13:11,258 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 19 [2020-10-14 23:13:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:13:11,259 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 23:13:11,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:13:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 23:13:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 23:13:11,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:11,266 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:13:11,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:13:11,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1938523064, now seen corresponding path program 1 times [2020-10-14 23:13:11,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:11,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696978281] [2020-10-14 23:13:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:12,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:12,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 23:13:12,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:13:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-14 23:13:12,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:13:12,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:13:12,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:13:12,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:13:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:13:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:12,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:12,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:12,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:12,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:13:12,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:12,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:13:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:13:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:13:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:13:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:13,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:13,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:13:13,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 23:13:13,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:13,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:13:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:13:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:13:13,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:13:13,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696978281] [2020-10-14 23:13:13,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:13:13,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:13:13,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715084781] [2020-10-14 23:13:13,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:13:13,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:13:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:13:13,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:13:13,300 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 7 states. [2020-10-14 23:14:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:14:05,760 INFO L93 Difference]: Finished difference Result 9556 states and 16476 transitions. [2020-10-14 23:14:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:14:05,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-14 23:14:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:14:05,822 INFO L225 Difference]: With dead ends: 9556 [2020-10-14 23:14:05,823 INFO L226 Difference]: Without dead ends: 6363 [2020-10-14 23:14:05,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:14:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6363 states. [2020-10-14 23:14:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6363 to 6255. [2020-10-14 23:14:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6255 states. [2020-10-14 23:14:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 10365 transitions. [2020-10-14 23:14:06,128 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 10365 transitions. Word has length 91 [2020-10-14 23:14:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:14:06,129 INFO L479 AbstractCegarLoop]: Abstraction has 6255 states and 10365 transitions. [2020-10-14 23:14:06,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:14:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 10365 transitions. [2020-10-14 23:14:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 23:14:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:14:06,146 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:14:06,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:14:06,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:14:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:14:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash 474819742, now seen corresponding path program 1 times [2020-10-14 23:14:06,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:14:06,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294661676] [2020-10-14 23:14:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:14:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:07,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:07,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 23:14:07,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:14:07,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 23:14:07,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:14:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:14:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 23:14:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:14:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:07,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:07,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:14:07,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:14:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:14:07,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:07,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:14:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:14:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:14:07,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:14:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:07,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:07,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:14:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:14:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 23:14:07,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:07,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:14:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:14:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:14:07,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:14:08,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294661676] [2020-10-14 23:14:08,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:14:08,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:14:08,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543626919] [2020-10-14 23:14:08,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:14:08,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:14:08,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:14:08,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:14:08,016 INFO L87 Difference]: Start difference. First operand 6255 states and 10365 transitions. Second operand 7 states. [2020-10-14 23:15:09,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:09,801 INFO L93 Difference]: Finished difference Result 18707 states and 31376 transitions. [2020-10-14 23:15:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:15:09,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-14 23:15:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:09,858 INFO L225 Difference]: With dead ends: 18707 [2020-10-14 23:15:09,859 INFO L226 Difference]: Without dead ends: 12458 [2020-10-14 23:15:09,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:15:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12458 states. [2020-10-14 23:15:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12458 to 12212. [2020-10-14 23:15:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12212 states. [2020-10-14 23:15:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12212 states to 12212 states and 18371 transitions. [2020-10-14 23:15:10,213 INFO L78 Accepts]: Start accepts. Automaton has 12212 states and 18371 transitions. Word has length 94 [2020-10-14 23:15:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:10,214 INFO L479 AbstractCegarLoop]: Abstraction has 12212 states and 18371 transitions. [2020-10-14 23:15:10,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:15:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12212 states and 18371 transitions. [2020-10-14 23:15:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 23:15:10,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:10,218 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-14 23:15:10,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:15:10,219 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:10,219 INFO L82 PathProgramCache]: Analyzing trace with hash -869606080, now seen corresponding path program 1 times [2020-10-14 23:15:10,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:10,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029864607] [2020-10-14 23:15:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:11,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:11,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:15:11,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:15:11,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-14 23:15:11,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:11,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:15:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:15:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:15:11,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:15:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:11,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:11,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:15:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:11,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:15:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:15:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:15:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:15:11,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 23:15:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:11,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:15:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:15:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:15:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:11,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029864607] [2020-10-14 23:15:11,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:15:11,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:15:11,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452065433] [2020-10-14 23:15:11,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:15:11,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:11,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:15:11,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:15:11,539 INFO L87 Difference]: Start difference. First operand 12212 states and 18371 transitions. Second operand 7 states. [2020-10-14 23:16:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:10,252 INFO L93 Difference]: Finished difference Result 37326 states and 57387 transitions. [2020-10-14 23:16:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:16:10,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-14 23:16:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:10,343 INFO L225 Difference]: With dead ends: 37326 [2020-10-14 23:16:10,343 INFO L226 Difference]: Without dead ends: 25120 [2020-10-14 23:16:10,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:16:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25120 states. [2020-10-14 23:16:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25120 to 23075. [2020-10-14 23:16:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23075 states. [2020-10-14 23:16:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23075 states to 23075 states and 31562 transitions. [2020-10-14 23:16:10,966 INFO L78 Accepts]: Start accepts. Automaton has 23075 states and 31562 transitions. Word has length 120 [2020-10-14 23:16:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:10,968 INFO L479 AbstractCegarLoop]: Abstraction has 23075 states and 31562 transitions. [2020-10-14 23:16:10,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:16:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23075 states and 31562 transitions. [2020-10-14 23:16:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 23:16:10,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:10,975 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:10,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:16:10,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 320753918, now seen corresponding path program 1 times [2020-10-14 23:16:10,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:10,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839021232] [2020-10-14 23:16:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:13,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:13,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 23:16:13,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2203 [2020-10-14 23:16:13,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:13,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:16:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:16:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 23:16:13,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:13,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:13,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:13,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:16:13,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:13,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:16:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:16:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:16:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:13,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:13,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 23:16:13,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 23:16:13,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:13,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 23:16:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:16:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:14,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839021232] [2020-10-14 23:16:14,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:16:14,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:16:14,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914560789] [2020-10-14 23:16:14,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:16:14,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:14,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:16:14,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:16:14,677 INFO L87 Difference]: Start difference. First operand 23075 states and 31562 transitions. Second operand 7 states.