/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:45,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:45,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:45,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:45,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:45,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:45,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:45,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:45,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:45,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:45,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:45,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:45,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:45,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:45,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:45,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:45,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:45,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:45,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:45,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:45,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:45,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:45,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:45,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:45,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:45,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:45,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:45,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:45,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:45,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:45,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:45,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:45,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:45,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:45,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:45,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:45,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:45,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:45,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:45,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:45,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:45,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:35:45,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:45,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:45,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:45,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:45,148 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:45,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:45,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:45,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:45,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:45,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:45,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:45,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:45,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:45,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:45,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:45,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:45,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:45,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:45,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:45,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:45,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:45,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:45,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:45,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:45,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:45,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:45,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:45,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:45,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:45,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:45,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:45,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:45,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:45,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:45,710 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:45,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 13:35:45,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecd22da7d/6a772760711c416fad0f5b8dfd3c02d0/FLAGd0db945dd [2020-09-25 13:35:46,447 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:46,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 13:35:46,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecd22da7d/6a772760711c416fad0f5b8dfd3c02d0/FLAGd0db945dd [2020-09-25 13:35:46,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecd22da7d/6a772760711c416fad0f5b8dfd3c02d0 [2020-09-25 13:35:46,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:46,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:46,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:46,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:46,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:46,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:46" (1/1) ... [2020-09-25 13:35:46,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:46, skipping insertion in model container [2020-09-25 13:35:46,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:46" (1/1) ... [2020-09-25 13:35:46,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:46,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:47,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:47,457 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:47,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:47,610 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:47,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47 WrapperNode [2020-09-25 13:35:47,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:47,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:47,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:47,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:47,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... [2020-09-25 13:35:47,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:47,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:47,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:47,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:47,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:49,692 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:49,692 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:49,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:49 BoogieIcfgContainer [2020-09-25 13:35:49,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:49,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:49,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:49,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:49,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:46" (1/3) ... [2020-09-25 13:35:49,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:49, skipping insertion in model container [2020-09-25 13:35:49,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:47" (2/3) ... [2020-09-25 13:35:49,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:49, skipping insertion in model container [2020-09-25 13:35:49,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:49" (3/3) ... [2020-09-25 13:35:49,713 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 13:35:49,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:49,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:49,766 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:49,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:49,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:49,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:49,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:49,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:49,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:49,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:49,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 13:35:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:35:49,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:49,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:49,878 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 13:35:49,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:49,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658661623] [2020-09-25 13:35:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:50,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 13:35:50,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 13:35:50,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:35:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:35:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:51,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:51,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:35:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:51,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:51,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658661623] [2020-09-25 13:35:51,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:51,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:35:51,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287896547] [2020-09-25 13:35:51,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:51,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:51,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:51,178 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 13:35:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:54,890 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 13:35:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:35:54,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-25 13:35:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:54,923 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 13:35:54,924 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 13:35:54,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 13:35:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 13:35:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 13:35:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 13:35:55,074 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-25 13:35:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:55,075 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 13:35:55,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 13:35:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:35:55,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:55,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:55,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:55,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:55,088 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-25 13:35:55,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:55,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554239347] [2020-09-25 13:35:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:00,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:36:00,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:36:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:00,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:36:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:36:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:00,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:36:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:00,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:36:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:36:00,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 13:36:00,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:00,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:36:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:00,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554239347] [2020-09-25 13:36:00,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:00,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:00,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181433828] [2020-09-25 13:36:00,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:00,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:00,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:00,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:00,636 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 7 states. [2020-09-25 13:36:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:03,116 INFO L93 Difference]: Finished difference Result 2198 states and 3031 transitions. [2020-09-25 13:36:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:36:03,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 13:36:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:03,128 INFO L225 Difference]: With dead ends: 2198 [2020-09-25 13:36:03,128 INFO L226 Difference]: Without dead ends: 1218 [2020-09-25 13:36:03,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-09-25 13:36:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 999. [2020-09-25 13:36:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 13:36:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1293 transitions. [2020-09-25 13:36:03,199 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1293 transitions. Word has length 137 [2020-09-25 13:36:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:03,202 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1293 transitions. [2020-09-25 13:36:03,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1293 transitions. [2020-09-25 13:36:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 13:36:03,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:03,218 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:03,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:36:03,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:03,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1168639507, now seen corresponding path program 1 times [2020-09-25 13:36:03,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:03,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279607770] [2020-09-25 13:36:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 13:36:08,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:36:08,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:36:08,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-25 13:36:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:36:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:36:08,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:36:08,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:36:08,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:36:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:36:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:36:08,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 13:36:08,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:36:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:08,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279607770] [2020-09-25 13:36:08,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:08,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:08,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431749140] [2020-09-25 13:36:08,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:08,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:08,933 INFO L87 Difference]: Start difference. First operand 999 states and 1293 transitions. Second operand 8 states. [2020-09-25 13:36:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:14,427 INFO L93 Difference]: Finished difference Result 3277 states and 4603 transitions. [2020-09-25 13:36:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:36:14,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-09-25 13:36:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:14,446 INFO L225 Difference]: With dead ends: 3277 [2020-09-25 13:36:14,446 INFO L226 Difference]: Without dead ends: 2293 [2020-09-25 13:36:14,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:36:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2020-09-25 13:36:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1938. [2020-09-25 13:36:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2020-09-25 13:36:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2426 transitions. [2020-09-25 13:36:14,530 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2426 transitions. Word has length 216 [2020-09-25 13:36:14,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:14,531 INFO L479 AbstractCegarLoop]: Abstraction has 1938 states and 2426 transitions. [2020-09-25 13:36:14,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2426 transitions. [2020-09-25 13:36:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 13:36:14,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:14,538 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:14,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:14,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:14,539 INFO L82 PathProgramCache]: Analyzing trace with hash -887528191, now seen corresponding path program 1 times [2020-09-25 13:36:14,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:14,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862469882] [2020-09-25 13:36:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 13:36:19,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:36:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 13:36:19,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-09-25 13:36:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:19,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:36:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 13:36:19,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:36:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 13:36:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:20,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 13:36:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:36:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 77 proven. 9 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 13:36:20,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862469882] [2020-09-25 13:36:20,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:20,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:36:20,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869303055] [2020-09-25 13:36:20,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:36:20,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:20,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:36:20,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:36:20,397 INFO L87 Difference]: Start difference. First operand 1938 states and 2426 transitions. Second operand 9 states. [2020-09-25 13:36:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:24,439 INFO L93 Difference]: Finished difference Result 4359 states and 5569 transitions. [2020-09-25 13:36:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:36:24,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 224 [2020-09-25 13:36:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:24,453 INFO L225 Difference]: With dead ends: 4359 [2020-09-25 13:36:24,453 INFO L226 Difference]: Without dead ends: 2436 [2020-09-25 13:36:24,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:36:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-09-25 13:36:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2377. [2020-09-25 13:36:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2377 states. [2020-09-25 13:36:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 2932 transitions. [2020-09-25 13:36:24,555 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 2932 transitions. Word has length 224 [2020-09-25 13:36:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:24,556 INFO L479 AbstractCegarLoop]: Abstraction has 2377 states and 2932 transitions. [2020-09-25 13:36:24,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:36:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 2932 transitions. [2020-09-25 13:36:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 13:36:24,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:24,562 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:24,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:24,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:24,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1806301176, now seen corresponding path program 1 times [2020-09-25 13:36:24,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:24,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301007554] [2020-09-25 13:36:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 13:36:29,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:36:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-25 13:36:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:29,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-25 13:36:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:29,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:36:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:29,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:29,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:36:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 13:36:29,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:29,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:36:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:36:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:30,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 13:36:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:30,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:36:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 13:36:30,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301007554] [2020-09-25 13:36:30,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:30,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:36:30,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813467444] [2020-09-25 13:36:30,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:36:30,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:30,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:36:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:36:30,343 INFO L87 Difference]: Start difference. First operand 2377 states and 2932 transitions. Second operand 9 states. [2020-09-25 13:36:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:35,129 INFO L93 Difference]: Finished difference Result 4911 states and 6214 transitions. [2020-09-25 13:36:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:36:35,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2020-09-25 13:36:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:35,149 INFO L225 Difference]: With dead ends: 4911 [2020-09-25 13:36:35,150 INFO L226 Difference]: Without dead ends: 2980 [2020-09-25 13:36:35,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:36:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-09-25 13:36:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2895. [2020-09-25 13:36:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2895 states. [2020-09-25 13:36:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 3517 transitions. [2020-09-25 13:36:35,248 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 3517 transitions. Word has length 225 [2020-09-25 13:36:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:35,249 INFO L479 AbstractCegarLoop]: Abstraction has 2895 states and 3517 transitions. [2020-09-25 13:36:35,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:36:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 3517 transitions. [2020-09-25 13:36:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 13:36:35,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:35,254 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:35,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:35,255 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1708229479, now seen corresponding path program 1 times [2020-09-25 13:36:35,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:35,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531220766] [2020-09-25 13:36:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat