/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=0.6 --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/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:44,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:44,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:44,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:44,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:44,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:44,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:44,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:44,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:44,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:44,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:44,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:44,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:44,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:44,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:44,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:44,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:44,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:44,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:44,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:44,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:44,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:44,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:44,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:44,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:44,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:44,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:44,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:44,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:44,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:44,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:44,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:44,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:44,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:44,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:44,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:44,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:44,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:44,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:44,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:44,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:44,108 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 06:45:44,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:44,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:44,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:44,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:44,171 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:44,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:44,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:44,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:44,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:44,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:44,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:44,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:44,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:44,174 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:44,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:44,174 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:44,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:44,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:44,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:44,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:44,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:44,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:44,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:44,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:44,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:44,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:44,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:44,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:44,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:44,179 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:45:44,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:44,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:44,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:44,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:44,713 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:44,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 06:45:44,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c109a90/5a4e64506ac64479882bc16bf8fbabf4/FLAG21b834f0f [2020-09-25 06:45:45,481 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:45,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 06:45:45,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c109a90/5a4e64506ac64479882bc16bf8fbabf4/FLAG21b834f0f [2020-09-25 06:45:45,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c109a90/5a4e64506ac64479882bc16bf8fbabf4 [2020-09-25 06:45:45,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:45,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:45,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:45,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:45,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:45,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:45" (1/1) ... [2020-09-25 06:45:45,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:45, skipping insertion in model container [2020-09-25 06:45:45,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:45" (1/1) ... [2020-09-25 06:45:45,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:45,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:46,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:46,312 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:46,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:46,622 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:46,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46 WrapperNode [2020-09-25 06:45:46,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:46,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:46,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:46,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:46,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (1/1) ... [2020-09-25 06:45:46,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:46,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:46,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:46,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:46,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (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 06:45:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:48,573 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:48,574 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:48,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:48 BoogieIcfgContainer [2020-09-25 06:45:48,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:48,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:48,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:48,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:45" (1/3) ... [2020-09-25 06:45:48,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:48, skipping insertion in model container [2020-09-25 06:45:48,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:46" (2/3) ... [2020-09-25 06:45:48,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:48, skipping insertion in model container [2020-09-25 06:45:48,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:48" (3/3) ... [2020-09-25 06:45:48,593 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 06:45:48,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:48,617 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:48,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:48,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:48,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:48,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:48,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:48,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:48,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:48,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:48,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 06:45:48,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:48,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:48,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:48,738 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 06:45:48,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:48,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843007766] [2020-09-25 06:45:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 06:45:54,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:45:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:45:54,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:45:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 06:45:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:45:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:45:54,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:45:54,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:54,375 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 06:45:54,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843007766] [2020-09-25 06:45:54,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:54,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:45:54,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030312804] [2020-09-25 06:45:54,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:54,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:54,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:54,412 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 06:45:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:57,199 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:45:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:57,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 06:45:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:57,232 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:45:57,232 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:45:57,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:45:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:45:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:45:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:45:57,367 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 06:45:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:57,368 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:45:57,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:45:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 06:45:57,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:57,378 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:57,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:57,379 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:57,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:57,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 06:45:57,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:57,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387708068] [2020-09-25 06:45:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 06:46:02,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:46:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:46:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:02,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:46:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 06:46:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:02,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:02,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:02,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:02,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:02,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:02,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:46:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:02,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387708068] [2020-09-25 06:46:02,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:02,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:02,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598790603] [2020-09-25 06:46:02,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:02,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:02,719 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 06:46:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:04,894 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 06:46:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:04,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 06:46:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:04,905 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 06:46:04,905 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 06:46:04,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 06:46:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 06:46:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 06:46:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 06:46:04,949 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 156 [2020-09-25 06:46:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:04,950 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 06:46:04,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 06:46:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 06:46:04,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:04,957 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:04,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:04,958 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:04,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 06:46:04,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:04,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629368170] [2020-09-25 06:46:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:46:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:46:10,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:10,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:46:10,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:46:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:10,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:10,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:46:10,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:46:10,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:10,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:46:10,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:46:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:10,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629368170] [2020-09-25 06:46:10,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:10,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:10,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424329162] [2020-09-25 06:46:10,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:10,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:10,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:10,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:10,304 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 06:46:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:12,325 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 06:46:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:12,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 06:46:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:12,343 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 06:46:12,344 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 06:46:12,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 06:46:12,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 06:46:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 06:46:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 06:46:12,424 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 162 [2020-09-25 06:46:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:12,424 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 06:46:12,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 06:46:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 06:46:12,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:12,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:12,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:12,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:12,438 INFO L82 PathProgramCache]: Analyzing trace with hash -997660219, now seen corresponding path program 1 times [2020-09-25 06:46:12,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:12,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144733566] [2020-09-25 06:46:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:17,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 06:46:17,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:17,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:46:17,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:17,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:17,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:46:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:46:17,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:17,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:46:17,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:17,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:17,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:17,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:46:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:17,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:46:17,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:17,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:17,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:46:17,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:17,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144733566] [2020-09-25 06:46:17,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:17,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:17,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509966958] [2020-09-25 06:46:17,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:17,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:17,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:17,874 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 5 states. [2020-09-25 06:46:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:20,120 INFO L93 Difference]: Finished difference Result 4518 states and 5602 transitions. [2020-09-25 06:46:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:20,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 06:46:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:20,141 INFO L225 Difference]: With dead ends: 4518 [2020-09-25 06:46:20,141 INFO L226 Difference]: Without dead ends: 2892 [2020-09-25 06:46:20,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-09-25 06:46:20,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2726. [2020-09-25 06:46:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2020-09-25 06:46:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3280 transitions. [2020-09-25 06:46:20,257 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3280 transitions. Word has length 173 [2020-09-25 06:46:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:20,257 INFO L479 AbstractCegarLoop]: Abstraction has 2726 states and 3280 transitions. [2020-09-25 06:46:20,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3280 transitions. [2020-09-25 06:46:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 06:46:20,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:20,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:20,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:20,269 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash 911650778, now seen corresponding path program 1 times [2020-09-25 06:46:20,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:20,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528075958] [2020-09-25 06:46:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:25,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:46:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:46:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:46:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:25,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:46:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:46:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:25,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:25,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:25,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:25,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:46:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:25,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:46:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:46:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:25,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:46:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 06:46:25,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:25,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:46:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:25,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528075958] [2020-09-25 06:46:25,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:25,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:25,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047646652] [2020-09-25 06:46:25,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:25,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:25,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:25,624 INFO L87 Difference]: Start difference. First operand 2726 states and 3280 transitions. Second operand 7 states. [2020-09-25 06:46:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:28,637 INFO L93 Difference]: Finished difference Result 6124 states and 7542 transitions. [2020-09-25 06:46:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:28,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 06:46:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:28,654 INFO L225 Difference]: With dead ends: 6124 [2020-09-25 06:46:28,654 INFO L226 Difference]: Without dead ends: 3081 [2020-09-25 06:46:28,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 06:46:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-09-25 06:46:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2727. [2020-09-25 06:46:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-09-25 06:46:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3160 transitions. [2020-09-25 06:46:28,752 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3160 transitions. Word has length 181 [2020-09-25 06:46:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:28,753 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3160 transitions. [2020-09-25 06:46:28,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3160 transitions. [2020-09-25 06:46:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 06:46:28,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:28,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:28,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:28,765 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:28,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1324494398, now seen corresponding path program 1 times [2020-09-25 06:46:28,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:28,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713470031] [2020-09-25 06:46:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 06:46:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:46:33,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 06:46:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:46:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:33,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:33,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:34,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:34,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 06:46:34,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:46:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:34,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:46:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:34,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713470031] [2020-09-25 06:46:34,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:34,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:34,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093464202] [2020-09-25 06:46:34,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:34,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:34,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:34,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:34,125 INFO L87 Difference]: Start difference. First operand 2727 states and 3160 transitions. Second operand 5 states.