/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:58,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:58,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:58,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:58,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:58,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:58,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:58,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:58,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:58,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:58,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:58,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:58,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:58,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:58,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:58,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:58,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:58,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:58,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:58,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:58,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:58,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:58,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:58,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:58,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:58,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:58,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:58,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:58,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:58,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:58,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:58,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:58,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:58,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:58,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:58,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:58,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:58,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:58,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:58,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:58,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:58,876 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 07:57:58,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:58,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:58,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:58,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:58,942 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:58,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:58,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:58,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:58,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:58,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:58,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:58,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:58,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:58,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:58,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:58,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:58,948 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:59,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:59,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:59,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:59,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:59,451 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:59,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 07:57:59,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e528fc315/c37f53a9e3d24569b8cc10bfa16841a9/FLAG7ab305c4c [2020-09-25 07:58:00,254 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:58:00,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 07:58:00,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e528fc315/c37f53a9e3d24569b8cc10bfa16841a9/FLAG7ab305c4c [2020-09-25 07:58:00,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e528fc315/c37f53a9e3d24569b8cc10bfa16841a9 [2020-09-25 07:58:00,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:58:00,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:58:00,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:58:00,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:58:00,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:58:00,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:58:00" (1/1) ... [2020-09-25 07:58:00,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e7c163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:00, skipping insertion in model container [2020-09-25 07:58:00,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:58:00" (1/1) ... [2020-09-25 07:58:00,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:58:00,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:58:01,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:58:01,106 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:58:01,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:58:01,417 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:58:01,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01 WrapperNode [2020-09-25 07:58:01,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:58:01,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:58:01,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:58:01,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:58:01,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:58:01,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:58:01,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:58:01,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:58:01,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (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 07:58:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:58:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:58:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:58:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:58:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:58:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:58:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:58:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:58:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:58:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:58:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:58:03,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:58:03,549 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:58:03,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:58:03 BoogieIcfgContainer [2020-09-25 07:58:03,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:58:03,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:58:03,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:58:03,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:58:03,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:58:00" (1/3) ... [2020-09-25 07:58:03,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f385118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:58:03, skipping insertion in model container [2020-09-25 07:58:03,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (2/3) ... [2020-09-25 07:58:03,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f385118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:58:03, skipping insertion in model container [2020-09-25 07:58:03,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:58:03" (3/3) ... [2020-09-25 07:58:03,571 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 07:58:03,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:58:03,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:58:03,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:58:03,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:58:03,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:58:03,677 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:58:03,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:58:03,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:58:03,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:58:03,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:58:03,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:58:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 07:58:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:58:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:03,740 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] [2020-09-25 07:58:03,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 07:58:03,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:03,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015969468] [2020-09-25 07:58:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 07:58:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:58:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-25 07:58:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:58:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:58:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:58:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:04,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:58:04,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:58:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:04,896 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 07:58:04,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015969468] [2020-09-25 07:58:04,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:04,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:58:04,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92672430] [2020-09-25 07:58:04,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:58:04,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:58:04,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:58:04,930 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 07:58:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:07,778 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 07:58:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:58:07,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 07:58:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:07,823 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 07:58:07,824 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 07:58:07,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:58:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 07:58:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 07:58:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 07:58:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 07:58:07,946 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 60 [2020-09-25 07:58:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:07,947 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 07:58:07,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:58:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 07:58:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 07:58:07,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:07,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:07,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:58:07,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:07,957 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-09-25 07:58:07,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:07,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941716225] [2020-09-25 07:58:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 07:58:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:58:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3285 [2020-09-25 07:58:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:11,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:58:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 07:58:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:11,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:11,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:58:11,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:11,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:58:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:11,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:58:11,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:11,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 07:58:11,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:11,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:58:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:11,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941716225] [2020-09-25 07:58:11,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:11,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:11,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583450870] [2020-09-25 07:58:11,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:11,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:11,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:11,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:11,661 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-25 07:58:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:14,919 INFO L93 Difference]: Finished difference Result 2009 states and 2514 transitions. [2020-09-25 07:58:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:58:14,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-25 07:58:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:14,927 INFO L225 Difference]: With dead ends: 2009 [2020-09-25 07:58:14,927 INFO L226 Difference]: Without dead ends: 1218 [2020-09-25 07:58:14,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:58:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-09-25 07:58:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1190. [2020-09-25 07:58:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 07:58:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1444 transitions. [2020-09-25 07:58:14,996 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1444 transitions. Word has length 139 [2020-09-25 07:58:14,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:14,999 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1444 transitions. [2020-09-25 07:58:14,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1444 transitions. [2020-09-25 07:58:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 07:58:15,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:15,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:15,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:58:15,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:15,013 INFO L82 PathProgramCache]: Analyzing trace with hash 791250278, now seen corresponding path program 1 times [2020-09-25 07:58:15,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:15,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925045429] [2020-09-25 07:58:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 07:58:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:58:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2913 [2020-09-25 07:58:17,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:17,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:58:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:58:17,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:18,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:18,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:18,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:58:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:18,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:58:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:18,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 07:58:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:58:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:18,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925045429] [2020-09-25 07:58:18,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:18,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:18,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290666504] [2020-09-25 07:58:18,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:18,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:18,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:18,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:18,310 INFO L87 Difference]: Start difference. First operand 1190 states and 1444 transitions. Second operand 7 states. [2020-09-25 07:58:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:20,802 INFO L93 Difference]: Finished difference Result 3077 states and 3845 transitions. [2020-09-25 07:58:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:20,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-09-25 07:58:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:20,815 INFO L225 Difference]: With dead ends: 3077 [2020-09-25 07:58:20,816 INFO L226 Difference]: Without dead ends: 1902 [2020-09-25 07:58:20,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-09-25 07:58:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1858. [2020-09-25 07:58:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-09-25 07:58:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2190 transitions. [2020-09-25 07:58:20,893 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2190 transitions. Word has length 142 [2020-09-25 07:58:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:20,899 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2190 transitions. [2020-09-25 07:58:20,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2190 transitions. [2020-09-25 07:58:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 07:58:20,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:20,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:58:20,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:58:20,909 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:20,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:20,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1665918402, now seen corresponding path program 1 times [2020-09-25 07:58:20,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:20,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425346175] [2020-09-25 07:58:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:25,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 07:58:25,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:58:25,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:25,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:58:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 07:58:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:26,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:26,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:26,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:26,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 07:58:26,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:26,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 07:58:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:26,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:26,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:58:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 07:58:26,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:26,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:58:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:26,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425346175] [2020-09-25 07:58:26,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:26,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:58:26,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556755057] [2020-09-25 07:58:26,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:26,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:26,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:26,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:26,996 INFO L87 Difference]: Start difference. First operand 1858 states and 2190 transitions. Second operand 8 states. [2020-09-25 07:58:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:30,839 INFO L93 Difference]: Finished difference Result 4215 states and 5154 transitions. [2020-09-25 07:58:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:30,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 247 [2020-09-25 07:58:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:30,853 INFO L225 Difference]: With dead ends: 4215 [2020-09-25 07:58:30,853 INFO L226 Difference]: Without dead ends: 2561 [2020-09-25 07:58:30,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-09-25 07:58:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2521. [2020-09-25 07:58:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2020-09-25 07:58:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 2960 transitions. [2020-09-25 07:58:30,930 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 2960 transitions. Word has length 247 [2020-09-25 07:58:30,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:30,931 INFO L479 AbstractCegarLoop]: Abstraction has 2521 states and 2960 transitions. [2020-09-25 07:58:30,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 2960 transitions. [2020-09-25 07:58:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 07:58:30,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:30,938 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:58:30,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:58:30,938 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash -192469169, now seen corresponding path program 1 times [2020-09-25 07:58:30,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:30,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857311855] [2020-09-25 07:58:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:34,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:36,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:58:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 07:58:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:36,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:36,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:58:36,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:36,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:36,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:36,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:36,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 07:58:36,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:36,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:58:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 07:58:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:36,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:58:36,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 07:58:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:36,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:58:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:58:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:37,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857311855] [2020-09-25 07:58:37,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:37,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:58:37,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948049617] [2020-09-25 07:58:37,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:37,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:37,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:37,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:37,197 INFO L87 Difference]: Start difference. First operand 2521 states and 2960 transitions. Second operand 8 states. [2020-09-25 07:58:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:41,942 INFO L93 Difference]: Finished difference Result 5869 states and 7059 transitions. [2020-09-25 07:58:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:58:41,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-09-25 07:58:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:41,961 INFO L225 Difference]: With dead ends: 5869 [2020-09-25 07:58:41,962 INFO L226 Difference]: Without dead ends: 3552 [2020-09-25 07:58:41,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:58:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-09-25 07:58:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3510. [2020-09-25 07:58:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3510 states. [2020-09-25 07:58:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4059 transitions. [2020-09-25 07:58:42,057 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4059 transitions. Word has length 302 [2020-09-25 07:58:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:42,057 INFO L479 AbstractCegarLoop]: Abstraction has 3510 states and 4059 transitions. [2020-09-25 07:58:42,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4059 transitions. [2020-09-25 07:58:42,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-09-25 07:58:42,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:42,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 07:58:42,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:42,066 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:42,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1465820701, now seen corresponding path program 1 times [2020-09-25 07:58:42,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:42,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144521658] [2020-09-25 07:58:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-25 07:58:47,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:58:47,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 07:58:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:58:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:47,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 07:58:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:58:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 07:58:47,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 07:58:47,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:58:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-25 07:58:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:58:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 07:58:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 229 proven. 71 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 07:58:47,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144521658] [2020-09-25 07:58:47,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:47,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:47,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460981578] [2020-09-25 07:58:47,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:47,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:47,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:47,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:47,982 INFO L87 Difference]: Start difference. First operand 3510 states and 4059 transitions. Second operand 7 states.