/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:14,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:14,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:14,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:14,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:14,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:14,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:14,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:14,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:14,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:14,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:14,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:14,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:14,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:14,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:14,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:14,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:14,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:14,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:14,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:14,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:14,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:14,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:14,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:14,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:14,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:14,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:14,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:14,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:14,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:14,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:14,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:14,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:14,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:14,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:14,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:14,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:14,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:14,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:14,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:14,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:14,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:23:14,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:14,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:14,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:14,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:14,506 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:14,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:14,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:14,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:14,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:14,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:14,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:14,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:14,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:14,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:14,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:14,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:14,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:14,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:14,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:14,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:14,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:14,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:14,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:14,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:14,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:14,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:14,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:14,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:14,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:14,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:23:14,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:15,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:15,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:15,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:15,018 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:15,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-24 18:23:15,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/350edd2fd/9196221afebe404a8570a581928870d7/FLAG565b5b3d3 [2020-09-24 18:23:15,795 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:15,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-24 18:23:15,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/350edd2fd/9196221afebe404a8570a581928870d7/FLAG565b5b3d3 [2020-09-24 18:23:16,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/350edd2fd/9196221afebe404a8570a581928870d7 [2020-09-24 18:23:16,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:16,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:16,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:16,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:16,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:16,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:16,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310ddca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16, skipping insertion in model container [2020-09-24 18:23:16,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:16,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:16,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:16,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:16,768 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:16,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:16,938 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:16,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16 WrapperNode [2020-09-24 18:23:16,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:16,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:16,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:16,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:16,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:16,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:16,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:16,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:17,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:17,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:17,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... [2020-09-24 18:23:17,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:17,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:17,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:17,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:17,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:17,145 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:18,573 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:18,573 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:18,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:18 BoogieIcfgContainer [2020-09-24 18:23:18,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:18,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:18,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:18,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:18,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:16" (1/3) ... [2020-09-24 18:23:18,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360f7aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:18, skipping insertion in model container [2020-09-24 18:23:18,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:16" (2/3) ... [2020-09-24 18:23:18,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360f7aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:18, skipping insertion in model container [2020-09-24 18:23:18,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:18" (3/3) ... [2020-09-24 18:23:18,593 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-24 18:23:18,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:18,617 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:18,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:18,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:18,676 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:18,677 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:18,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:18,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:18,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:18,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:18,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 18:23:18,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:18,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:18,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:18,748 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-24 18:23:18,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:18,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310541926] [2020-09-24 18:23:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 18:23:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:24,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-24 18:23:24,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:23:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:24,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:24,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:24,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:23:24,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:24,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310541926] [2020-09-24 18:23:24,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:24,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:24,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149749292] [2020-09-24 18:23:24,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:24,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:24,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:24,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:24,450 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:26,641 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-24 18:23:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:26,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-24 18:23:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:26,671 INFO L225 Difference]: With dead ends: 1386 [2020-09-24 18:23:26,672 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 18:23:26,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 18:23:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-24 18:23:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-24 18:23:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-24 18:23:26,850 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-24 18:23:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:26,854 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-24 18:23:26,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-24 18:23:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:23:26,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:26,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:26,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:26,869 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:26,870 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-24 18:23:26,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:26,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095064295] [2020-09-24 18:23:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:31,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 18:23:31,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:23:31,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:23:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-24 18:23:31,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:32,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:23:32,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:32,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:23:32,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:23:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:32,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095064295] [2020-09-24 18:23:32,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:32,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:32,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000636157] [2020-09-24 18:23:32,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:32,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:32,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:32,332 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-24 18:23:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:34,699 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-24 18:23:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:34,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-24 18:23:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:34,709 INFO L225 Difference]: With dead ends: 1900 [2020-09-24 18:23:34,709 INFO L226 Difference]: Without dead ends: 1189 [2020-09-24 18:23:34,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-24 18:23:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-24 18:23:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-24 18:23:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-24 18:23:34,748 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-24 18:23:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:34,749 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-24 18:23:34,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-24 18:23:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:23:34,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:34,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:34,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:34,755 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:34,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:34,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-24 18:23:34,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:34,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219041545] [2020-09-24 18:23:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:23:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:23:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:23:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:23:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:23:39,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:23:39,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:40,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:23:40,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:23:40,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:23:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:23:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:40,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219041545] [2020-09-24 18:23:40,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:40,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:40,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105129150] [2020-09-24 18:23:40,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:40,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:40,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:40,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:40,124 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 7 states. [2020-09-24 18:23:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:42,378 INFO L93 Difference]: Finished difference Result 2735 states and 3590 transitions. [2020-09-24 18:23:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:23:42,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-09-24 18:23:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:42,395 INFO L225 Difference]: With dead ends: 2735 [2020-09-24 18:23:42,395 INFO L226 Difference]: Without dead ends: 1702 [2020-09-24 18:23:42,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:23:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-09-24 18:23:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1676. [2020-09-24 18:23:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2020-09-24 18:23:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2128 transitions. [2020-09-24 18:23:42,488 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2128 transitions. Word has length 187 [2020-09-24 18:23:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:42,489 INFO L479 AbstractCegarLoop]: Abstraction has 1676 states and 2128 transitions. [2020-09-24 18:23:42,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2128 transitions. [2020-09-24 18:23:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 18:23:42,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:42,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:42,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:42,506 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:42,507 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-24 18:23:42,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:42,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287821472] [2020-09-24 18:23:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:47,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 18:23:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:23:47,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:23:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:23:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:47,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:47,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:23:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:47,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:47,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 18:23:47,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:23:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:47,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287821472] [2020-09-24 18:23:47,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:47,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:47,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466413809] [2020-09-24 18:23:47,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:47,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:47,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:47,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:47,835 INFO L87 Difference]: Start difference. First operand 1676 states and 2128 transitions. Second operand 7 states. [2020-09-24 18:23:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:50,326 INFO L93 Difference]: Finished difference Result 4503 states and 5915 transitions. [2020-09-24 18:23:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:50,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-24 18:23:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:50,341 INFO L225 Difference]: With dead ends: 4503 [2020-09-24 18:23:50,341 INFO L226 Difference]: Without dead ends: 2678 [2020-09-24 18:23:50,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-09-24 18:23:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2627. [2020-09-24 18:23:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2020-09-24 18:23:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3196 transitions. [2020-09-24 18:23:50,429 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3196 transitions. Word has length 197 [2020-09-24 18:23:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:50,430 INFO L479 AbstractCegarLoop]: Abstraction has 2627 states and 3196 transitions. [2020-09-24 18:23:50,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3196 transitions. [2020-09-24 18:23:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 18:23:50,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:50,441 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:50,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:50,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:50,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1517406194, now seen corresponding path program 1 times [2020-09-24 18:23:50,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:50,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406301739] [2020-09-24 18:23:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-24 18:23:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 18:23:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:23:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:55,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:23:55,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:55,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:23:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:55,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:23:55,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:23:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:55,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406301739] [2020-09-24 18:23:55,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:55,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:55,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049854988] [2020-09-24 18:23:55,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:55,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:55,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:55,873 INFO L87 Difference]: Start difference. First operand 2627 states and 3196 transitions. Second operand 7 states. [2020-09-24 18:23:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:58,468 INFO L93 Difference]: Finished difference Result 6240 states and 7814 transitions. [2020-09-24 18:23:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:58,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-24 18:23:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:58,484 INFO L225 Difference]: With dead ends: 6240 [2020-09-24 18:23:58,484 INFO L226 Difference]: Without dead ends: 2893 [2020-09-24 18:23:58,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-09-24 18:23:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2867. [2020-09-24 18:23:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2867 states. [2020-09-24 18:23:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3297 transitions. [2020-09-24 18:23:58,573 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3297 transitions. Word has length 214 [2020-09-24 18:23:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:58,573 INFO L479 AbstractCegarLoop]: Abstraction has 2867 states and 3297 transitions. [2020-09-24 18:23:58,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3297 transitions. [2020-09-24 18:23:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 18:23:58,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:58,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:58,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:58,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:58,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:58,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2064742286, now seen corresponding path program 1 times [2020-09-24 18:23:58,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:58,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505069459] [2020-09-24 18:23:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:03,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 18:24:03,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:24:03,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:24:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:24:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:03,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking...