/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:25:55,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:25:55,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:25:55,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:25:55,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:25:55,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:25:55,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:25:55,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:25:55,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:25:55,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:25:55,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:25:55,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:25:55,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:25:55,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:25:55,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:25:55,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:25:55,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:25:55,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:25:55,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:25:55,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:25:55,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:25:55,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:25:55,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:25:55,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:25:55,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:25:55,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:25:55,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:25:55,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:25:55,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:25:55,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:25:55,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:25:55,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:25:55,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:25:55,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:25:55,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:25:55,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:25:55,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:25:55,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:25:55,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:25:55,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:25:55,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:25:55,626 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 [2020-10-12 15:25:55,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:25:55,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:25:55,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:25:55,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:25:55,688 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:25:55,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:25:55,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:25:55,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:25:55,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:25:55,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:25:55,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:25:55,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:25:55,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:25:55,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:25:55,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:25:55,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:25:55,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:25:55,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:25:55,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:25:55,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:25:55,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:25:55,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:25:55,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:25:55,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:25:55,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:25:55,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:25:55,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:25:55,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:25:55,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:25:55,697 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:25:56,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:25:56,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:25:56,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:25:56,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:25:56,089 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:25:56,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-12 15:25:56,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25477e0e7/f2bc39e7242e46568a9e35a74e905e18/FLAGeab08b6f7 [2020-10-12 15:25:57,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:25:57,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-12 15:25:57,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25477e0e7/f2bc39e7242e46568a9e35a74e905e18/FLAGeab08b6f7 [2020-10-12 15:25:57,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25477e0e7/f2bc39e7242e46568a9e35a74e905e18 [2020-10-12 15:25:57,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:25:57,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:25:57,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:25:57,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:25:57,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:25:57,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:25:57" (1/1) ... [2020-10-12 15:25:57,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:25:57, skipping insertion in model container [2020-10-12 15:25:57,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:25:57" (1/1) ... [2020-10-12 15:25:57,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:25:57,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:26:00,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:26:00,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:26:01,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:26:01,725 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:26:01,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01 WrapperNode [2020-10-12 15:26:01,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:26:01,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:26:01,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:26:01,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:26:01,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:01,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:01,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:01,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:02,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:02,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:02,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (1/1) ... [2020-10-12 15:26:02,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:26:02,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:26:02,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:26:02,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:26:02,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (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 [2020-10-12 15:26:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:26:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:26:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:26:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:26:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:26:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 15:26:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 15:26:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 15:26:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:26:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:26:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:26:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:26:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 15:26:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 15:26:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 15:26:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:26:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:26:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:26:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:26:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:26:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:26:16,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:26:16,091 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:26:16,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:26:16 BoogieIcfgContainer [2020-10-12 15:26:16,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:26:16,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:26:16,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:26:16,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:26:16,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:25:57" (1/3) ... [2020-10-12 15:26:16,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b93d542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:26:16, skipping insertion in model container [2020-10-12 15:26:16,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:26:01" (2/3) ... [2020-10-12 15:26:16,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b93d542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:26:16, skipping insertion in model container [2020-10-12 15:26:16,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:26:16" (3/3) ... [2020-10-12 15:26:16,129 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label56.c [2020-10-12 15:26:16,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:26:16,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:26:16,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:26:16,211 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:26:16,211 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:26:16,211 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:26:16,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:26:16,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:26:16,212 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:26:16,212 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:26:16,212 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:26:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-12 15:26:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:26:16,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:26:16,276 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] [2020-10-12 15:26:16,277 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:26:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:26:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1696606132, now seen corresponding path program 1 times [2020-10-12 15:26:16,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:26:16,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393127337] [2020-10-12 15:26:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:26:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:17,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 15:26:17,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:17,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-12 15:26:17,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:26:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:26:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:26:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:26:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:26:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:17,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:26:17,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:26:17,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:26:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:26:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:26:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:26:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:26:17,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393127337] [2020-10-12 15:26:17,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:26:17,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:26:17,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109837988] [2020-10-12 15:26:17,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:26:17,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:26:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:26:17,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:26:17,284 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-12 15:26:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:26:50,652 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2020-10-12 15:26:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:26:50,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-12 15:26:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:26:50,712 INFO L225 Difference]: With dead ends: 5076 [2020-10-12 15:26:50,712 INFO L226 Difference]: Without dead ends: 3219 [2020-10-12 15:26:50,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:26:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-12 15:26:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2020-10-12 15:26:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-12 15:26:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2020-10-12 15:26:51,005 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 57 [2020-10-12 15:26:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:26:51,006 INFO L479 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2020-10-12 15:26:51,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:26:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2020-10-12 15:26:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 15:26:51,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:26:51,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:26:51,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:26:51,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:26:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:26:51,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1000428320, now seen corresponding path program 1 times [2020-10-12 15:26:51,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:26:51,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657035468] [2020-10-12 15:26:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:26:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:51,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:51,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:53,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 15:26:53,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:26:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949 [2020-10-12 15:26:53,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:26:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:26:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 15:26:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:26:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:26:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:53,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:53,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:26:53,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:26:53,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:26:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:26:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:26:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:26:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:26:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:53,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:26:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:26:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-12 15:26:53,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:26:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:26:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 15:26:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:26:53,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657035468] [2020-10-12 15:26:53,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:26:53,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:26:53,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465429124] [2020-10-12 15:26:53,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:26:53,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:26:53,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:26:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:26:53,590 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand 7 states. [2020-10-12 15:27:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:27:44,665 INFO L93 Difference]: Finished difference Result 9658 states and 15395 transitions. [2020-10-12 15:27:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:27:44,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-12 15:27:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:27:44,713 INFO L225 Difference]: With dead ends: 9658 [2020-10-12 15:27:44,713 INFO L226 Difference]: Without dead ends: 6470 [2020-10-12 15:27:44,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:27:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2020-10-12 15:27:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6343. [2020-10-12 15:27:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6343 states. [2020-10-12 15:27:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6343 states to 6343 states and 8863 transitions. [2020-10-12 15:27:45,023 INFO L78 Accepts]: Start accepts. Automaton has 6343 states and 8863 transitions. Word has length 128 [2020-10-12 15:27:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:27:45,027 INFO L479 AbstractCegarLoop]: Abstraction has 6343 states and 8863 transitions. [2020-10-12 15:27:45,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:27:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6343 states and 8863 transitions. [2020-10-12 15:27:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 15:27:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:27:45,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:27:45,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:27:45,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:27:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:27:45,045 INFO L82 PathProgramCache]: Analyzing trace with hash -531996439, now seen corresponding path program 1 times [2020-10-12 15:27:45,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:27:45,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103361070] [2020-10-12 15:27:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:27:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 15:27:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:27:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-12 15:27:46,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:27:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:27:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 15:27:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:27:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:46,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:46,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:27:46,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:27:46,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:27:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:27:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:27:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:27:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:27:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:47,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:47,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:27:47,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:27:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 15:27:47,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:27:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:27:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:27:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:27:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:27:47,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103361070] [2020-10-12 15:27:47,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:27:47,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:27:47,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532339836] [2020-10-12 15:27:47,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:27:47,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:27:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:27:47,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:27:47,215 INFO L87 Difference]: Start difference. First operand 6343 states and 8863 transitions. Second operand 7 states. [2020-10-12 15:28:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:50,905 INFO L93 Difference]: Finished difference Result 19099 states and 27055 transitions. [2020-10-12 15:28:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:28:50,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-12 15:28:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:50,971 INFO L225 Difference]: With dead ends: 19099 [2020-10-12 15:28:50,972 INFO L226 Difference]: Without dead ends: 12762 [2020-10-12 15:28:50,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:28:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2020-10-12 15:28:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 12519. [2020-10-12 15:28:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12519 states. [2020-10-12 15:28:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 16222 transitions. [2020-10-12 15:28:51,354 INFO L78 Accepts]: Start accepts. Automaton has 12519 states and 16222 transitions. Word has length 130 [2020-10-12 15:28:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:51,357 INFO L479 AbstractCegarLoop]: Abstraction has 12519 states and 16222 transitions. [2020-10-12 15:28:51,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:28:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12519 states and 16222 transitions. [2020-10-12 15:28:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 15:28:51,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:51,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:51,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:28:51,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:51,372 INFO L82 PathProgramCache]: Analyzing trace with hash 917972616, now seen corresponding path program 1 times [2020-10-12 15:28:51,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:51,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761821533] [2020-10-12 15:28:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 15:28:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:28:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1714 [2020-10-12 15:28:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:28:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:28:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 15:28:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:53,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:53,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:28:53,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:53,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:28:53,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:53,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:28:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:28:53,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:28:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:53,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:53,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 15:28:53,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 15:28:53,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:28:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:28:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 15:28:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:53,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761821533] [2020-10-12 15:28:53,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:28:53,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:28:53,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358023383] [2020-10-12 15:28:53,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:28:53,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:28:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:28:53,688 INFO L87 Difference]: Start difference. First operand 12519 states and 16222 transitions. Second operand 7 states. [2020-10-12 15:29:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:29:50,175 INFO L93 Difference]: Finished difference Result 37581 states and 50119 transitions. [2020-10-12 15:29:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:29:50,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-12 15:29:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:29:50,282 INFO L225 Difference]: With dead ends: 37581 [2020-10-12 15:29:50,282 INFO L226 Difference]: Without dead ends: 25068 [2020-10-12 15:29:50,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:29:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25068 states. [2020-10-12 15:29:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25068 to 24664. [2020-10-12 15:29:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24664 states. [2020-10-12 15:29:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24664 states to 24664 states and 31120 transitions. [2020-10-12 15:29:51,140 INFO L78 Accepts]: Start accepts. Automaton has 24664 states and 31120 transitions. Word has length 166 [2020-10-12 15:29:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:29:51,142 INFO L479 AbstractCegarLoop]: Abstraction has 24664 states and 31120 transitions. [2020-10-12 15:29:51,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:29:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 24664 states and 31120 transitions. [2020-10-12 15:29:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-12 15:29:51,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:29:51,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 15:29:51,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:29:51,151 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:29:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:29:51,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1498413363, now seen corresponding path program 1 times [2020-10-12 15:29:51,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:29:51,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311400865] [2020-10-12 15:29:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:29:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:29:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:29:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:29:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:29:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:29:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:29:56,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-12 15:29:56,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:29:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 15:29:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:29:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:29:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:29:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-12 15:29:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:29:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:29:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:29:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:29:56,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:29:56,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:29:56,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:29:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:29:56,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:29:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:29:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:29:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:29:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:29:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:29:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:29:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:29:57,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:29:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 15:29:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:29:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-12 15:29:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:29:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:29:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:29:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-12 15:29:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0