/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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:11:37,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:11:37,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:11:37,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:11:37,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:11:37,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:11:37,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:11:37,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:11:37,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:11:37,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:11:37,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:11:37,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:11:37,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:11:37,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:11:37,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:11:37,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:11:37,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:11:37,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:11:37,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:11:37,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:11:37,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:11:37,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:11:37,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:11:37,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:11:37,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:11:37,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:11:37,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:11:37,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:11:37,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:11:37,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:11:37,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:11:37,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:11:37,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:11:37,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:11:37,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:11:37,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:11:37,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:11:37,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:11:37,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:11:37,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:11:37,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:11:37,754 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 23:11:37,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:11:37,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:11:37,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:11:37,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:11:37,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:11:37,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:11:37,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:11:37,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:11:37,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:11:37,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:11:37,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:11:37,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:11:37,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:11:37,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:11:37,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:11:37,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:11:37,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:11:37,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:11:37,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:11:37,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:11:37,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:11:37,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:11:37,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:11:37,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:11:37,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:11:37,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:11:37,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:11:37,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:11:37,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:11:37,813 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 23:11:38,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:11:38,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:11:38,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:11:38,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:11:38,200 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:11:38,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-14 23:11:38,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542021a05/b7e8dd9802f84ee69d97a22608188052/FLAG63aa671a0 [2020-10-14 23:11:39,416 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:11:39,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-14 23:11:39,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542021a05/b7e8dd9802f84ee69d97a22608188052/FLAG63aa671a0 [2020-10-14 23:11:39,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542021a05/b7e8dd9802f84ee69d97a22608188052 [2020-10-14 23:11:39,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:11:39,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:11:39,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:11:39,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:11:39,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:11:39,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:11:39" (1/1) ... [2020-10-14 23:11:39,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130f42b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:39, skipping insertion in model container [2020-10-14 23:11:39,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:11:39" (1/1) ... [2020-10-14 23:11:39,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:11:39,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:11:42,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:11:42,418 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:11:43,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:11:43,865 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:11:43,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43 WrapperNode [2020-10-14 23:11:43,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:11:43,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:11:43,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:11:43,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:11:43,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:43,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:44,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:44,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:44,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:44,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:44,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (1/1) ... [2020-10-14 23:11:44,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:11:44,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:11:44,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:11:44,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:11:44,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (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 23:11:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:11:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:11:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:11:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:11:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:11:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:11:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:11:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:11:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:11:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:11:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:11:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:11:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:11:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:11:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:11:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:11:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:11:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:11:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:11:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:11:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:12:00,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:12:00,407 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:12:00,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:00 BoogieIcfgContainer [2020-10-14 23:12:00,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:12:00,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:12:00,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:12:00,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:12:00,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:11:39" (1/3) ... [2020-10-14 23:12:00,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c484adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:00, skipping insertion in model container [2020-10-14 23:12:00,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:43" (2/3) ... [2020-10-14 23:12:00,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c484adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:00, skipping insertion in model container [2020-10-14 23:12:00,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:00" (3/3) ... [2020-10-14 23:12:00,458 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label56.c [2020-10-14 23:12:00,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:12:00,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:12:00,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:12:00,570 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:12:00,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:12:00,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:12:00,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:12:00,571 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:12:00,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:12:00,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:12:00,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:12:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:12:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:12:00,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:00,671 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, 1, 1, 1, 1, 1, 1] [2020-10-14 23:12:00,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:00,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1696606132, now seen corresponding path program 1 times [2020-10-14 23:12:00,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:00,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688036676] [2020-10-14 23:12:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:01,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:01,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:12:01,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:01,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 23:12:01,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:01,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:12:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:12:01,770 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 23:12:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:01,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:01,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:12:01,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:01,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:01,823 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 23:12:01,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688036676] [2020-10-14 23:12:01,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:01,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:12:01,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871089707] [2020-10-14 23:12:01,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:12:01,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:12:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:12:01,867 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:12:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:29,771 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2020-10-14 23:12:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:12:29,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 23:12:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:29,822 INFO L225 Difference]: With dead ends: 5076 [2020-10-14 23:12:29,823 INFO L226 Difference]: Without dead ends: 3219 [2020-10-14 23:12:29,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:12:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-14 23:12:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2020-10-14 23:12:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-14 23:12:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2020-10-14 23:12:30,100 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 57 [2020-10-14 23:12:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:30,101 INFO L479 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2020-10-14 23:12:30,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:12:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2020-10-14 23:12:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 23:12:30,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:30,109 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:12:30,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:12:30,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1000428320, now seen corresponding path program 1 times [2020-10-14 23:12:30,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:30,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578024210] [2020-10-14 23:12:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:31,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:31,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 23:12:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:12:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-14 23:12:31,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:31,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:12:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:12:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:31,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:12:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 23:12:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:32,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:32,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:12:32,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:12:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:12:32,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:32,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:12:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:12:32,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578024210] [2020-10-14 23:12:32,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:32,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:12:32,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560961677] [2020-10-14 23:12:32,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:32,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:32,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:32,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:32,135 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand 7 states. [2020-10-14 23:13:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:13:07,908 INFO L93 Difference]: Finished difference Result 9556 states and 15355 transitions. [2020-10-14 23:13:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:13:07,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-14 23:13:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:13:07,954 INFO L225 Difference]: With dead ends: 9556 [2020-10-14 23:13:07,955 INFO L226 Difference]: Without dead ends: 6368 [2020-10-14 23:13:07,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:13:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6368 states. [2020-10-14 23:13:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6368 to 6220. [2020-10-14 23:13:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-10-14 23:13:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 8830 transitions. [2020-10-14 23:13:08,189 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 8830 transitions. Word has length 128 [2020-10-14 23:13:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:13:08,190 INFO L479 AbstractCegarLoop]: Abstraction has 6220 states and 8830 transitions. [2020-10-14 23:13:08,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:13:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 8830 transitions. [2020-10-14 23:13:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 23:13:08,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:08,194 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, 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] [2020-10-14 23:13:08,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:13:08,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1905006968, now seen corresponding path program 1 times [2020-10-14 23:13:08,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:08,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413471697] [2020-10-14 23:13:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:08,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 23:13:10,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:13:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2437 [2020-10-14 23:13:10,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:10,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:13:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:13:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:13:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:13:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:10,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:13:10,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:10,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:13:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:13:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:13:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:13:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:11,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:11,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:13:11,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 23:13:11,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:11,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:13:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:13:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:13:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:13:11,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413471697] [2020-10-14 23:13:11,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:13:11,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:13:11,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079007494] [2020-10-14 23:13:11,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:13:11,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:13:11,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:13:11,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:13:11,293 INFO L87 Difference]: Start difference. First operand 6220 states and 8830 transitions. Second operand 7 states. [2020-10-14 23:14:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:14:10,425 INFO L93 Difference]: Finished difference Result 18898 states and 27304 transitions. [2020-10-14 23:14:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:14:10,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-10-14 23:14:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:14:10,491 INFO L225 Difference]: With dead ends: 18898 [2020-10-14 23:14:10,492 INFO L226 Difference]: Without dead ends: 12684 [2020-10-14 23:14:10,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:14:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12684 states. [2020-10-14 23:14:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12684 to 12496. [2020-10-14 23:14:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12496 states. [2020-10-14 23:14:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12496 states to 12496 states and 16263 transitions. [2020-10-14 23:14:10,891 INFO L78 Accepts]: Start accepts. Automaton has 12496 states and 16263 transitions. Word has length 158 [2020-10-14 23:14:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:14:10,894 INFO L479 AbstractCegarLoop]: Abstraction has 12496 states and 16263 transitions. [2020-10-14 23:14:10,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:14:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 12496 states and 16263 transitions. [2020-10-14 23:14:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 23:14:10,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:14:10,905 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, 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] [2020-10-14 23:14:10,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:14:10,906 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:14:10,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:14:10,906 INFO L82 PathProgramCache]: Analyzing trace with hash 917972616, now seen corresponding path program 1 times [2020-10-14 23:14:10,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:14:10,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540986375] [2020-10-14 23:14:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:14:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 23:14:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:14:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-14 23:14:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:12,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:14:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:14:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:14:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:12,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:14:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:12,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:12,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:14:12,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:14:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:14:12,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:12,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:12,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:14:12,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:14:12,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:14:12,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:14:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:14:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:14:12,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:14:12,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 23:14:12,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:14:12,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 23:14:12,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:14:12,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:14:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:14:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:14:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:14:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:14:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:14:12,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540986375] [2020-10-14 23:14:12,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:14:12,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:14:12,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541699972] [2020-10-14 23:14:12,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:14:12,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:14:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:14:12,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:14:12,936 INFO L87 Difference]: Start difference. First operand 12496 states and 16263 transitions. Second operand 7 states. [2020-10-14 23:15:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:19,561 INFO L93 Difference]: Finished difference Result 37501 states and 49337 transitions. [2020-10-14 23:15:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:15:19,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-14 23:15:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:19,678 INFO L225 Difference]: With dead ends: 37501 [2020-10-14 23:15:19,678 INFO L226 Difference]: Without dead ends: 25011 [2020-10-14 23:15:19,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:15:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25011 states. [2020-10-14 23:15:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25011 to 24723. [2020-10-14 23:15:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24723 states. [2020-10-14 23:15:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24723 states to 24723 states and 31268 transitions. [2020-10-14 23:15:20,362 INFO L78 Accepts]: Start accepts. Automaton has 24723 states and 31268 transitions. Word has length 166 [2020-10-14 23:15:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:20,364 INFO L479 AbstractCegarLoop]: Abstraction has 24723 states and 31268 transitions. [2020-10-14 23:15:20,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:15:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 24723 states and 31268 transitions. [2020-10-14 23:15:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-14 23:15:20,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:20,374 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, 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, 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, 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] [2020-10-14 23:15:20,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:15:20,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:20,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1498413363, now seen corresponding path program 1 times [2020-10-14 23:15:20,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:20,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804133456] [2020-10-14 23:15:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-14 23:15:25,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:15:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 23:15:25,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:25,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:15:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:15:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-14 23:15:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:15:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:25,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:25,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:15:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:25,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:15:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:15:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:15:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:26,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:26,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 23:15:26,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:26,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-14 23:15:26,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:26,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:15:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:15:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-14 23:15:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 23:15:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:26,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:26,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 23:15:26,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 23:15:26,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:26,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 23:15:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 100 proven. 159 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:15:27,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804133456] [2020-10-14 23:15:27,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:27,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:15:27,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180117634] [2020-10-14 23:15:27,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:15:27,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:27,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:15:27,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:15:27,539 INFO L87 Difference]: Start difference. First operand 24723 states and 31268 transitions. Second operand 7 states.