/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=0.3 --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:55,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:55,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:55,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:55,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:55,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:55,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:55,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:55,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:55,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:55,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:55,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:55,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:55,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:55,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:55,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:55,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:55,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:55,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:55,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:55,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:55,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:55,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:55,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:55,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:55,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:55,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:55,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:55,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:55,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:55,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:55,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:55,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:55,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:55,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:55,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:55,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:55,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:55,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:55,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:55,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:55,881 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 12:27:55,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:55,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:55,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:55,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:55,933 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:55,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:55,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:55,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:55,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:55,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:55,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:55,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:55,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:55,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:55,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:55,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:55,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:55,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:55,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:55,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:55,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:55,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:55,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:55,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:55,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:55,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:55,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:55,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:55,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:55,941 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:56,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:56,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:56,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:56,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:56,419 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:56,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 12:27:56,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d80b5805/37cc2e46e4ab4d9383528d19ebb8e493/FLAG5d1870e3e [2020-09-25 12:27:57,218 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:57,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 12:27:57,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d80b5805/37cc2e46e4ab4d9383528d19ebb8e493/FLAG5d1870e3e [2020-09-25 12:27:57,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d80b5805/37cc2e46e4ab4d9383528d19ebb8e493 [2020-09-25 12:27:57,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:57,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:57,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:57,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:57,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:57,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:57" (1/1) ... [2020-09-25 12:27:57,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66409f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:57, skipping insertion in model container [2020-09-25 12:27:57,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:57" (1/1) ... [2020-09-25 12:27:57,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:57,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:58,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:58,280 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:58,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:58,471 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:58,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58 WrapperNode [2020-09-25 12:27:58,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:58,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:58,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:58,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:58,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (1/1) ... [2020-09-25 12:27:58,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:58,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:58,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:58,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:58,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (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 12:27:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:58,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:01,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:01,436 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:01,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:01 BoogieIcfgContainer [2020-09-25 12:28:01,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:01,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:01,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:01,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:01,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:57" (1/3) ... [2020-09-25 12:28:01,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a060f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:01, skipping insertion in model container [2020-09-25 12:28:01,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:58" (2/3) ... [2020-09-25 12:28:01,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a060f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:01, skipping insertion in model container [2020-09-25 12:28:01,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:01" (3/3) ... [2020-09-25 12:28:01,459 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 12:28:01,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:01,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:01,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:01,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:01,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:01,543 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:01,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:01,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:01,543 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:01,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:01,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 12:28:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 12:28:01,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:01,592 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] [2020-09-25 12:28:01,592 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 12:28:01,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:01,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500465681] [2020-09-25 12:28:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:28:02,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-09-25 12:28:02,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:02,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:28:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:28:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 12:28:02,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:02,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:02,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:28:02,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:02,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:28:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:02,877 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 12:28:02,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500465681] [2020-09-25 12:28:02,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:02,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:28:02,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683582333] [2020-09-25 12:28:02,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:28:02,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:28:02,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:02,914 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 12:28:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:08,185 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-25 12:28:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:28:08,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 12:28:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:08,227 INFO L225 Difference]: With dead ends: 2361 [2020-09-25 12:28:08,227 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 12:28:08,244 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 12:28:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 12:28:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-25 12:28:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-25 12:28:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-25 12:28:08,396 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 39 [2020-09-25 12:28:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:08,397 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-25 12:28:08,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:28:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-25 12:28:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 12:28:08,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:08,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:08,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:08,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1767258319, now seen corresponding path program 1 times [2020-09-25 12:28:08,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:08,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652428807] [2020-09-25 12:28:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:08,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:11,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:28:11,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:28:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3184 [2020-09-25 12:28:11,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:11,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 12:28:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:11,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:11,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:11,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:11,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:11,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 12:28:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 12:28:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:12,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:28:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:12,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652428807] [2020-09-25 12:28:12,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:12,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:12,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539690238] [2020-09-25 12:28:12,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:12,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:12,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:12,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:12,161 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 7 states. [2020-09-25 12:28:16,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:16,777 INFO L93 Difference]: Finished difference Result 3121 states and 4257 transitions. [2020-09-25 12:28:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:28:16,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 12:28:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:16,800 INFO L225 Difference]: With dead ends: 3121 [2020-09-25 12:28:16,800 INFO L226 Difference]: Without dead ends: 1983 [2020-09-25 12:28:16,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-09-25 12:28:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1823. [2020-09-25 12:28:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-25 12:28:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2294 transitions. [2020-09-25 12:28:16,910 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2294 transitions. Word has length 120 [2020-09-25 12:28:16,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:16,913 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2294 transitions. [2020-09-25 12:28:16,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2294 transitions. [2020-09-25 12:28:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 12:28:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:16,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:16,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:16,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722232, now seen corresponding path program 1 times [2020-09-25 12:28:16,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:16,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758035204] [2020-09-25 12:28:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 12:28:20,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:20,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3095 [2020-09-25 12:28:20,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 12:28:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:20,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:20,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:28:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:20,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:20,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:20,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:20,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-25 12:28:20,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:20,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758035204] [2020-09-25 12:28:20,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:20,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:20,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924912330] [2020-09-25 12:28:20,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:20,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:20,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:20,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:20,654 INFO L87 Difference]: Start difference. First operand 1823 states and 2294 transitions. Second operand 7 states. [2020-09-25 12:28:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:24,418 INFO L93 Difference]: Finished difference Result 4767 states and 6237 transitions. [2020-09-25 12:28:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:24,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 12:28:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:24,438 INFO L225 Difference]: With dead ends: 4767 [2020-09-25 12:28:24,438 INFO L226 Difference]: Without dead ends: 2961 [2020-09-25 12:28:24,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-09-25 12:28:24,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2883. [2020-09-25 12:28:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-09-25 12:28:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3579 transitions. [2020-09-25 12:28:24,539 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3579 transitions. Word has length 128 [2020-09-25 12:28:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:24,539 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 3579 transitions. [2020-09-25 12:28:24,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3579 transitions. [2020-09-25 12:28:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 12:28:24,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:24,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:24,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:24,544 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash 868228625, now seen corresponding path program 1 times [2020-09-25 12:28:24,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:24,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491257419] [2020-09-25 12:28:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:29,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:28:29,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:28:29,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:29,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:28:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 12:28:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:29,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:29,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:29,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:29,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:29,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:28:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:29,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 12:28:29,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:29,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 12:28:29,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:29,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 12:28:29,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:30,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491257419] [2020-09-25 12:28:30,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:30,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:30,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180013795] [2020-09-25 12:28:30,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:30,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:30,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:30,131 INFO L87 Difference]: Start difference. First operand 2883 states and 3579 transitions. Second operand 7 states. [2020-09-25 12:28:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:35,425 INFO L93 Difference]: Finished difference Result 5630 states and 7151 transitions. [2020-09-25 12:28:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:35,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 12:28:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:35,449 INFO L225 Difference]: With dead ends: 5630 [2020-09-25 12:28:35,450 INFO L226 Difference]: Without dead ends: 3829 [2020-09-25 12:28:35,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2020-09-25 12:28:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3570. [2020-09-25 12:28:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3570 states. [2020-09-25 12:28:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4457 transitions. [2020-09-25 12:28:35,575 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4457 transitions. Word has length 160 [2020-09-25 12:28:35,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:35,577 INFO L479 AbstractCegarLoop]: Abstraction has 3570 states and 4457 transitions. [2020-09-25 12:28:35,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4457 transitions. [2020-09-25 12:28:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 12:28:35,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:35,583 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:28:35,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:35,583 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash 283082810, now seen corresponding path program 1 times [2020-09-25 12:28:35,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:35,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084099399] [2020-09-25 12:28:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:40,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:40,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 12:28:40,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:40,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:28:40,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:40,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:28:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-09-25 12:28:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:40,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:40,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:40,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:40,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:28:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:40,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 12:28:41,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 12:28:41,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:28:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 12:28:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 12:28:41,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:28:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 107 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:28:42,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084099399] [2020-09-25 12:28:42,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:42,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:42,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189399555] [2020-09-25 12:28:42,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:42,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:42,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:42,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:42,095 INFO L87 Difference]: Start difference. First operand 3570 states and 4457 transitions. Second operand 9 states.