/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=SMALLEST --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/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:55,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:55,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:55,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:55,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:55,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:55,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:55,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:55,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:55,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:55,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:55,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:55,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:55,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:55,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:55,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:55,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:55,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:55,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:55,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:55,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:55,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:55,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:55,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:55,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:55,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:55,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:55,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:55,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:55,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:55,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:55,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:55,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:55,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:55,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:55,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:55,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:55,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:55,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:55,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:55,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:55,630 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 [2020-09-24 18:23:55,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:55,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:55,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:55,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:55,659 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:55,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:55,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:55,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:55,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:55,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:55,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:55,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:55,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:55,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:55,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:55,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:55,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:55,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:55,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:55,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:55,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:55,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:55,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:55,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:55,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:55,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:55,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:55,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:55,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:55,664 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:23:56,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:56,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:56,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:56,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:56,152 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:56,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-24 18:23:56,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4569fc4/8b05ec889b4e4fd5adb64b58ddd96cec/FLAGd70407198 [2020-09-24 18:23:56,867 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:56,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-24 18:23:56,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4569fc4/8b05ec889b4e4fd5adb64b58ddd96cec/FLAGd70407198 [2020-09-24 18:23:57,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4569fc4/8b05ec889b4e4fd5adb64b58ddd96cec [2020-09-24 18:23:57,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:57,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:57,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:57,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:57,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:57,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:57,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57, skipping insertion in model container [2020-09-24 18:23:57,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:57,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:57,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:57,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:57,703 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:57,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:57,973 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:57,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57 WrapperNode [2020-09-24 18:23:57,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:57,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:57,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:57,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:57,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:57,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:58,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:58,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:58,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:58,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:58,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (1/1) ... [2020-09-24 18:23:58,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:58,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:58,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:58,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:58,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (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 [2020-09-24 18:23:58,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:59,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:59,683 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:59,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:59 BoogieIcfgContainer [2020-09-24 18:23:59,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:59,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:59,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:59,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:59,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:57" (1/3) ... [2020-09-24 18:23:59,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5849b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:59, skipping insertion in model container [2020-09-24 18:23:59,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:57" (2/3) ... [2020-09-24 18:23:59,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5849b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:59, skipping insertion in model container [2020-09-24 18:23:59,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:59" (3/3) ... [2020-09-24 18:23:59,703 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-24 18:23:59,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:59,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:59,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:59,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:59,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:59,791 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:59,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:59,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:59,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:59,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:59,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:23:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 18:23:59,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:59,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:59,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-24 18:23:59,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:59,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610264558] [2020-09-24 18:23:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:00,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:24:00,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:24:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-24 18:24:00,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:24:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:24:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 30 [2020-09-24 18:24:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:24:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:24:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:01,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610264558] [2020-09-24 18:24:01,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:01,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:01,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617734899] [2020-09-24 18:24:01,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:01,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:01,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:01,055 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:03,034 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-24 18:24:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:03,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-24 18:24:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:03,059 INFO L225 Difference]: With dead ends: 1089 [2020-09-24 18:24:03,060 INFO L226 Difference]: Without dead ends: 575 [2020-09-24 18:24:03,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-24 18:24:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-24 18:24:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 18:24:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-24 18:24:03,182 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 85 [2020-09-24 18:24:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:03,183 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-24 18:24:03,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-24 18:24:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:24:03,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:03,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:03,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:03,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:03,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:03,197 INFO L82 PathProgramCache]: Analyzing trace with hash -682373680, now seen corresponding path program 1 times [2020-09-24 18:24:03,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:03,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451465199] [2020-09-24 18:24:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:24:07,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-09-24 18:24:07,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 18:24:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:24:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:24:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:24:07,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:24:07,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 18:24:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:07,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451465199] [2020-09-24 18:24:07,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:07,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:07,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102050666] [2020-09-24 18:24:07,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:07,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:07,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:07,773 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-24 18:24:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:09,687 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-24 18:24:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:09,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-24 18:24:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:09,695 INFO L225 Difference]: With dead ends: 1389 [2020-09-24 18:24:09,695 INFO L226 Difference]: Without dead ends: 859 [2020-09-24 18:24:09,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-24 18:24:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-24 18:24:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-24 18:24:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-24 18:24:09,752 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 164 [2020-09-24 18:24:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:09,754 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-24 18:24:09,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-24 18:24:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 18:24:09,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:09,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:09,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:09,776 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-24 18:24:09,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:09,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093789336] [2020-09-24 18:24:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:14,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 18:24:14,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:24:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:24:14,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:24:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:24:14,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:14,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:14,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:24:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 18:24:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:24:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:15,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093789336] [2020-09-24 18:24:15,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:15,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:15,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528480884] [2020-09-24 18:24:15,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:15,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:15,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:15,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:15,140 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 5 states. [2020-09-24 18:24:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:16,957 INFO L93 Difference]: Finished difference Result 1997 states and 2448 transitions. [2020-09-24 18:24:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:16,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-24 18:24:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:16,973 INFO L225 Difference]: With dead ends: 1997 [2020-09-24 18:24:16,973 INFO L226 Difference]: Without dead ends: 825 [2020-09-24 18:24:16,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-09-24 18:24:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 815. [2020-09-24 18:24:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-09-24 18:24:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 960 transitions. [2020-09-24 18:24:17,022 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 960 transitions. Word has length 174 [2020-09-24 18:24:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:17,024 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 960 transitions. [2020-09-24 18:24:17,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 960 transitions. [2020-09-24 18:24:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 18:24:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:17,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:17,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:17,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1746643718, now seen corresponding path program 1 times [2020-09-24 18:24:17,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:17,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781624788] [2020-09-24 18:24:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:21,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 18:24:21,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4553 [2020-09-24 18:24:21,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:24:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 18:24:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:21,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:21,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:21,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:21,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:21,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:24:21,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:24:21,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:24:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:24:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:22,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:22,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 18:24:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:24:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:24:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781624788] [2020-09-24 18:24:22,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:22,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:22,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077669459] [2020-09-24 18:24:22,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:22,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:22,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:22,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:22,260 INFO L87 Difference]: Start difference. First operand 815 states and 960 transitions. Second operand 7 states. [2020-09-24 18:24:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:24,447 INFO L93 Difference]: Finished difference Result 1975 states and 2408 transitions. [2020-09-24 18:24:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:24,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-09-24 18:24:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:24,457 INFO L225 Difference]: With dead ends: 1975 [2020-09-24 18:24:24,457 INFO L226 Difference]: Without dead ends: 1175 [2020-09-24 18:24:24,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-09-24 18:24:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 987. [2020-09-24 18:24:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-09-24 18:24:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1150 transitions. [2020-09-24 18:24:24,502 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1150 transitions. Word has length 244 [2020-09-24 18:24:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:24,503 INFO L479 AbstractCegarLoop]: Abstraction has 987 states and 1150 transitions. [2020-09-24 18:24:24,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1150 transitions. [2020-09-24 18:24:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 18:24:24,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:24,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:24,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:24,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 192061849, now seen corresponding path program 1 times [2020-09-24 18:24:24,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:24,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108529918] [2020-09-24 18:24:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 18:24:29,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:24:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 18:24:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 18:24:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:29,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:24:29,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:29,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:29,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:24:29,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 18:24:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 18:24:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 18:24:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:29,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 18:24:29,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:24:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:30,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108529918] [2020-09-24 18:24:30,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:30,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:30,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986159126] [2020-09-24 18:24:30,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:30,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:30,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:30,009 INFO L87 Difference]: Start difference. First operand 987 states and 1150 transitions. Second operand 7 states. [2020-09-24 18:24:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:32,116 INFO L93 Difference]: Finished difference Result 2353 states and 2901 transitions. [2020-09-24 18:24:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:32,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-09-24 18:24:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:32,127 INFO L225 Difference]: With dead ends: 2353 [2020-09-24 18:24:32,128 INFO L226 Difference]: Without dead ends: 1381 [2020-09-24 18:24:32,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-09-24 18:24:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1301. [2020-09-24 18:24:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-24 18:24:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1529 transitions. [2020-09-24 18:24:32,199 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1529 transitions. Word has length 251 [2020-09-24 18:24:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:32,199 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1529 transitions. [2020-09-24 18:24:32,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1529 transitions. [2020-09-24 18:24:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 18:24:32,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:32,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:32,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:32,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:32,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:32,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2003769290, now seen corresponding path program 1 times [2020-09-24 18:24:32,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:32,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223394263] [2020-09-24 18:24:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:37,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-24 18:24:37,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:24:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:24:37,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 18:24:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:24:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:37,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:24:37,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:24:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:24:37,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 18:24:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 18:24:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:37,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:24:37,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 18:24:37,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:24:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:37,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223394263] [2020-09-24 18:24:37,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:37,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:37,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353710484] [2020-09-24 18:24:37,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:37,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:37,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:37,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:37,735 INFO L87 Difference]: Start difference. First operand 1301 states and 1529 transitions. Second operand 7 states. [2020-09-24 18:24:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:39,973 INFO L93 Difference]: Finished difference Result 2963 states and 3524 transitions. [2020-09-24 18:24:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:39,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-24 18:24:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:39,983 INFO L225 Difference]: With dead ends: 2963 [2020-09-24 18:24:39,983 INFO L226 Difference]: Without dead ends: 1677 [2020-09-24 18:24:39,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2020-09-24 18:24:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1343. [2020-09-24 18:24:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1343 states. [2020-09-24 18:24:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1575 transitions. [2020-09-24 18:24:40,028 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1575 transitions. Word has length 263 [2020-09-24 18:24:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:40,029 INFO L479 AbstractCegarLoop]: Abstraction has 1343 states and 1575 transitions. [2020-09-24 18:24:40,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1575 transitions. [2020-09-24 18:24:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-24 18:24:40,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:40,035 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:40,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:24:40,035 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -657272076, now seen corresponding path program 1 times [2020-09-24 18:24:40,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:40,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670420024] [2020-09-24 18:24:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking...