/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/Problem17_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:25:21,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:25:21,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:25:21,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:25:21,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:25:21,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:25:21,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:25:21,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:25:21,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:25:21,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:25:21,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:25:21,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:25:21,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:25:22,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:25:22,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:25:22,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:25:22,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:25:22,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:25:22,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:25:22,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:25:22,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:25:22,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:25:22,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:25:22,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:25:22,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:25:22,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:25:22,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:25:22,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:25:22,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:25:22,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:25:22,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:25:22,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:25:22,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:25:22,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:25:22,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:25:22,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:25:22,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:25:22,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:25:22,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:25:22,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:25:22,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:25:22,044 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 22:25:22,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:25:22,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:25:22,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:25:22,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:25:22,105 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:25:22,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:25:22,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:25:22,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:25:22,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:25:22,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:25:22,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:25:22,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:25:22,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:25:22,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:25:22,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:25:22,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:25:22,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:25:22,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:25:22,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:25:22,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:25:22,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:25:22,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:25:22,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:25:22,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:25:22,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:25:22,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:25:22,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:25:22,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:25:22,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:25:22,114 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 22:25:22,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:25:22,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:25:22,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:25:22,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:25:22,512 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:25:22,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10.c [2020-10-14 22:25:22,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2e21bbcc/9641ef87487f48cc95f39ebf6a7395fc/FLAG22c237ae2 [2020-10-14 22:25:23,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:25:23,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label10.c [2020-10-14 22:25:23,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2e21bbcc/9641ef87487f48cc95f39ebf6a7395fc/FLAG22c237ae2 [2020-10-14 22:25:23,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2e21bbcc/9641ef87487f48cc95f39ebf6a7395fc [2020-10-14 22:25:23,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:25:23,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:25:23,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:25:23,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:25:23,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:25:23,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:25:23" (1/1) ... [2020-10-14 22:25:23,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d228d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:23, skipping insertion in model container [2020-10-14 22:25:23,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:25:23" (1/1) ... [2020-10-14 22:25:23,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:25:24,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:25:25,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:25:25,551 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:25:26,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:25:26,177 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:25:26,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26 WrapperNode [2020-10-14 22:25:26,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:25:26,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:25:26,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:25:26,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:25:26,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (1/1) ... [2020-10-14 22:25:26,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:25:26,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:25:26,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:25:26,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:25:26,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (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 22:25:26,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:25:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:25:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:25:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:25:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:25:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:25:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:25:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:25:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:25:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:25:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:25:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:25:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:25:36,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:25:36,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:25:36,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:25:36 BoogieIcfgContainer [2020-10-14 22:25:36,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:25:36,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:25:36,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:25:36,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:25:36,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:25:23" (1/3) ... [2020-10-14 22:25:36,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e02d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:25:36, skipping insertion in model container [2020-10-14 22:25:36,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:26" (2/3) ... [2020-10-14 22:25:36,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e02d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:25:36, skipping insertion in model container [2020-10-14 22:25:36,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:25:36" (3/3) ... [2020-10-14 22:25:36,115 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label10.c [2020-10-14 22:25:36,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:25:36,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:25:36,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:25:36,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:25:36,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:25:36,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:25:36,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:25:36,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:25:36,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:25:36,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:25:36,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:25:36,227 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:25:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 22:25:36,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:36,239 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] [2020-10-14 22:25:36,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash 461986881, now seen corresponding path program 1 times [2020-10-14 22:25:36,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:36,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114364238] [2020-10-14 22:25:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:36,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:36,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 22:25:36,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-14 22:25:36,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:36,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:25:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 22:25:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 22:25:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:37,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:37,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:37,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:25:37,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:37,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:37,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:37,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:37,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:37,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:37,147 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 22:25:37,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114364238] [2020-10-14 22:25:37,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:25:37,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:25:37,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766574490] [2020-10-14 22:25:37,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:25:37,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:25:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:25:37,190 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:25:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:52,677 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-14 22:25:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:25:52,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-14 22:25:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:52,732 INFO L225 Difference]: With dead ends: 1716 [2020-10-14 22:25:52,732 INFO L226 Difference]: Without dead ends: 1034 [2020-10-14 22:25:52,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:25:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-14 22:25:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-14 22:25:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-14 22:25:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-14 22:25:52,908 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 45 [2020-10-14 22:25:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:52,909 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-14 22:25:52,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:25:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-14 22:25:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 22:25:52,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:52,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:52,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:25:52,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1853017043, now seen corresponding path program 1 times [2020-10-14 22:25:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:52,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000347691] [2020-10-14 22:25:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:25:54,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-10-14 22:25:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:25:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 22:25:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:25:54,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:55,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:55,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:25:55,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:55,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-14 22:25:55,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:55,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:25:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:25:55,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000347691] [2020-10-14 22:25:55,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:55,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:25:55,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100700873] [2020-10-14 22:25:55,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:25:55,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:55,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:25:55,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:25:55,508 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 6 states. [2020-10-14 22:26:10,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:10,503 INFO L93 Difference]: Finished difference Result 2966 states and 5083 transitions. [2020-10-14 22:26:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:26:10,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-14 22:26:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:10,519 INFO L225 Difference]: With dead ends: 2966 [2020-10-14 22:26:10,520 INFO L226 Difference]: Without dead ends: 1964 [2020-10-14 22:26:10,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:26:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-10-14 22:26:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1941. [2020-10-14 22:26:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2020-10-14 22:26:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2878 transitions. [2020-10-14 22:26:10,607 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2878 transitions. Word has length 114 [2020-10-14 22:26:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:10,607 INFO L479 AbstractCegarLoop]: Abstraction has 1941 states and 2878 transitions. [2020-10-14 22:26:10,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:26:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2878 transitions. [2020-10-14 22:26:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 22:26:10,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:10,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:10,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:26:10,612 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:10,613 INFO L82 PathProgramCache]: Analyzing trace with hash -57029721, now seen corresponding path program 1 times [2020-10-14 22:26:10,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:10,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837015229] [2020-10-14 22:26:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:10,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:12,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:12,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 22:26:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-14 22:26:12,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:12,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 22:26:12,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:12,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:26:12,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:12,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:12,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:12,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:26:12,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 22:26:12,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:12,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:12,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:26:12,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:12,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837015229] [2020-10-14 22:26:12,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:26:12,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:26:12,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027985661] [2020-10-14 22:26:12,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:12,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:12,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:12,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:12,608 INFO L87 Difference]: Start difference. First operand 1941 states and 2878 transitions. Second operand 7 states. [2020-10-14 22:26:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:28,713 INFO L93 Difference]: Finished difference Result 5744 states and 8635 transitions. [2020-10-14 22:26:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:26:28,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-14 22:26:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:28,745 INFO L225 Difference]: With dead ends: 5744 [2020-10-14 22:26:28,745 INFO L226 Difference]: Without dead ends: 3809 [2020-10-14 22:26:28,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 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 22:26:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2020-10-14 22:26:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3312. [2020-10-14 22:26:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-10-14 22:26:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4318 transitions. [2020-10-14 22:26:28,883 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4318 transitions. Word has length 124 [2020-10-14 22:26:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:28,885 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 4318 transitions. [2020-10-14 22:26:28,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:26:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4318 transitions. [2020-10-14 22:26:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 22:26:28,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:28,894 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:26:28,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:26:28,899 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1403613283, now seen corresponding path program 1 times [2020-10-14 22:26:28,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:28,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083813698] [2020-10-14 22:26:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 22:26:30,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:26:30,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-14 22:26:30,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:26:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:26:30,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:30,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:30,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:26:30,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:30,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:26:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:30,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:26:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:31,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:31,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:26:31,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 22:26:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:31,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:26:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 102 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:26:31,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083813698] [2020-10-14 22:26:31,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:31,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:26:31,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504595287] [2020-10-14 22:26:31,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:26:31,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:26:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:26:31,275 INFO L87 Difference]: Start difference. First operand 3312 states and 4318 transitions. Second operand 6 states. [2020-10-14 22:26:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:47,009 INFO L93 Difference]: Finished difference Result 8537 states and 11546 transitions. [2020-10-14 22:26:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:26:47,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2020-10-14 22:26:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:47,053 INFO L225 Difference]: With dead ends: 8537 [2020-10-14 22:26:47,053 INFO L226 Difference]: Without dead ends: 4313 [2020-10-14 22:26:47,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:26:47,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2020-10-14 22:26:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4255. [2020-10-14 22:26:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-10-14 22:26:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5366 transitions. [2020-10-14 22:26:47,259 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5366 transitions. Word has length 201 [2020-10-14 22:26:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:47,261 INFO L479 AbstractCegarLoop]: Abstraction has 4255 states and 5366 transitions. [2020-10-14 22:26:47,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:26:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5366 transitions. [2020-10-14 22:26:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 22:26:47,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:47,267 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:26:47,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:26:47,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1740777431, now seen corresponding path program 1 times [2020-10-14 22:26:47,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:47,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348505320] [2020-10-14 22:26:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 22:26:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-14 22:26:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:26:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:26:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:26:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 22:26:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:48,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:26:48,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:26:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:26:48,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:26:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:26:48,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:26:48,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348505320] [2020-10-14 22:26:48,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:48,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:48,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486008476] [2020-10-14 22:26:49,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:49,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:49,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:49,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:49,001 INFO L87 Difference]: Start difference. First operand 4255 states and 5366 transitions. Second operand 7 states. [2020-10-14 22:27:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:08,115 INFO L93 Difference]: Finished difference Result 11271 states and 14850 transitions. [2020-10-14 22:27:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:27:08,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-14 22:27:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:08,180 INFO L225 Difference]: With dead ends: 11271 [2020-10-14 22:27:08,180 INFO L226 Difference]: Without dead ends: 7022 [2020-10-14 22:27:08,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 22:27:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2020-10-14 22:27:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 7000. [2020-10-14 22:27:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7000 states. [2020-10-14 22:27:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 8866 transitions. [2020-10-14 22:27:08,485 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 8866 transitions. Word has length 202 [2020-10-14 22:27:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:08,488 INFO L479 AbstractCegarLoop]: Abstraction has 7000 states and 8866 transitions. [2020-10-14 22:27:08,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:27:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 8866 transitions. [2020-10-14 22:27:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 22:27:08,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:08,493 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:27:08,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:27:08,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash -775514519, now seen corresponding path program 1 times [2020-10-14 22:27:08,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:08,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760459174] [2020-10-14 22:27:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:08,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:13,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:13,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 22:27:13,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:13,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 22:27:13,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:13,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:27:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:27:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:27:13,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:13,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:14,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:14,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:27:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:14,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:27:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:14,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:14,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:14,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:27:14,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 22:27:14,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:14,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:27:14,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:27:14,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760459174] [2020-10-14 22:27:14,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:14,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:27:14,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387287115] [2020-10-14 22:27:14,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:27:14,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:27:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:27:14,639 INFO L87 Difference]: Start difference. First operand 7000 states and 8866 transitions. Second operand 10 states. [2020-10-14 22:27:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:55,194 INFO L93 Difference]: Finished difference Result 25310 states and 35080 transitions. [2020-10-14 22:27:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:27:55,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 207 [2020-10-14 22:27:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:55,299 INFO L225 Difference]: With dead ends: 25310 [2020-10-14 22:27:55,300 INFO L226 Difference]: Without dead ends: 17836 [2020-10-14 22:27:55,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-14 22:27:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17836 states. [2020-10-14 22:27:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17836 to 17603. [2020-10-14 22:27:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17603 states. [2020-10-14 22:27:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 22444 transitions. [2020-10-14 22:27:55,847 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 22444 transitions. Word has length 207 [2020-10-14 22:27:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:55,848 INFO L479 AbstractCegarLoop]: Abstraction has 17603 states and 22444 transitions. [2020-10-14 22:27:55,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:27:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 22444 transitions. [2020-10-14 22:27:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 22:27:55,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:55,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:55,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:27:55,855 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash -447309918, now seen corresponding path program 1 times [2020-10-14 22:27:55,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:55,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842723806] [2020-10-14 22:27:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 22:28:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4254 [2020-10-14 22:28:00,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:28:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:28:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:00,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:28:00,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:00,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:28:00,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:28:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:28:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:28:00,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 22:28:00,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:28:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:00,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:28:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:01,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:01,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:28:01,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 22:28:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:01,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:28:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 252 proven. 91 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:28:01,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842723806] [2020-10-14 22:28:01,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:01,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:28:01,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556822938] [2020-10-14 22:28:01,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:28:01,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:28:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:28:01,452 INFO L87 Difference]: Start difference. First operand 17603 states and 22444 transitions. Second operand 11 states. [2020-10-14 22:28:01,604 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-14 22:28:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:27,161 INFO L93 Difference]: Finished difference Result 45656 states and 60393 transitions. [2020-10-14 22:28:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 22:28:27,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 293 [2020-10-14 22:28:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:27,291 INFO L225 Difference]: With dead ends: 45656 [2020-10-14 22:28:27,291 INFO L226 Difference]: Without dead ends: 27606 [2020-10-14 22:28:27,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-14 22:28:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27606 states. [2020-10-14 22:28:27,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27606 to 26038. [2020-10-14 22:28:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26038 states. [2020-10-14 22:28:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26038 states to 26038 states and 32123 transitions. [2020-10-14 22:28:28,030 INFO L78 Accepts]: Start accepts. Automaton has 26038 states and 32123 transitions. Word has length 293 [2020-10-14 22:28:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:28,030 INFO L479 AbstractCegarLoop]: Abstraction has 26038 states and 32123 transitions. [2020-10-14 22:28:28,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 22:28:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 26038 states and 32123 transitions. [2020-10-14 22:28:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 22:28:28,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:28,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:28,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:28:28,040 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:28,041 INFO L82 PathProgramCache]: Analyzing trace with hash 478331020, now seen corresponding path program 1 times [2020-10-14 22:28:28,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:28,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737431938] [2020-10-14 22:28:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:33,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:33,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:28:33,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 22:28:33,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:33,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:28:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:33,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:33,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:33,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:33,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:28:33,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:33,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:33,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:33,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:28:33,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 22:28:33,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:33,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:33,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:28:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:28:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:33,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:33,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:28:33,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:28:33,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:33,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:28:33,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:33,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 202 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:28:34,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737431938] [2020-10-14 22:28:34,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:34,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:34,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508600179] [2020-10-14 22:28:34,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:34,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:34,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:34,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:34,092 INFO L87 Difference]: Start difference. First operand 26038 states and 32123 transitions. Second operand 7 states. [2020-10-14 22:28:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:49,270 INFO L93 Difference]: Finished difference Result 55267 states and 68054 transitions. [2020-10-14 22:28:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:28:49,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 22:28:49,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:49,366 INFO L225 Difference]: With dead ends: 55267 [2020-10-14 22:28:49,366 INFO L226 Difference]: Without dead ends: 29670 [2020-10-14 22:28:49,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:28:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29670 states. [2020-10-14 22:28:49,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29670 to 29582. [2020-10-14 22:28:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29582 states. [2020-10-14 22:28:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29582 states to 29582 states and 36133 transitions. [2020-10-14 22:28:50,019 INFO L78 Accepts]: Start accepts. Automaton has 29582 states and 36133 transitions. Word has length 316 [2020-10-14 22:28:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:50,019 INFO L479 AbstractCegarLoop]: Abstraction has 29582 states and 36133 transitions. [2020-10-14 22:28:50,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 29582 states and 36133 transitions. [2020-10-14 22:28:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-14 22:28:50,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:50,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 22:28:50,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:28:50,034 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1574622273, now seen corresponding path program 1 times [2020-10-14 22:28:50,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:50,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516898590] [2020-10-14 22:28:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:28:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:51,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:28:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:51,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:28:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:28:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:28:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:28:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:28:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 22:28:51,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 22:28:51,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:28:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:28:52,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516898590] [2020-10-14 22:28:52,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:52,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:52,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761446828] [2020-10-14 22:28:52,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:52,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:52,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:52,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:52,028 INFO L87 Difference]: Start difference. First operand 29582 states and 36133 transitions. Second operand 7 states.