/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/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:24,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:24,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:24,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:24,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:24,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:24,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:24,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:24,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:24,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:24,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:24,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:24,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:24,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:24,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:24,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:24,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:24,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:25,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:25,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:25,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:25,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:25,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:25,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:25,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:25,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:25,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:25,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:25,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:25,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:25,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:25,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:25,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:25,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:25,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:25,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:25,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:25,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:25,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:25,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:25,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:25,039 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 18:19:25,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:25,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:25,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:25,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:25,106 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:25,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:25,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:25,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:25,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:25,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:25,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:25,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:25,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:25,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:25,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:25,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:25,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:25,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:25,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:25,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:25,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:25,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:25,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:25,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:25,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:25,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:25,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:25,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:25,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:25,112 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 18:19:25,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:25,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:25,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:25,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:25,643 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:25,644 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-24 18:19:25,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eeb99f58/9442c0cbc4904ba1bd5e6e0351340a4d/FLAG8a77195d1 [2020-09-24 18:19:26,402 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:26,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-24 18:19:26,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eeb99f58/9442c0cbc4904ba1bd5e6e0351340a4d/FLAG8a77195d1 [2020-09-24 18:19:26,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eeb99f58/9442c0cbc4904ba1bd5e6e0351340a4d [2020-09-24 18:19:26,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:26,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:26,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:26,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:26,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:26,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:26" (1/1) ... [2020-09-24 18:19:26,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc47136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:26, skipping insertion in model container [2020-09-24 18:19:26,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:26" (1/1) ... [2020-09-24 18:19:26,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:26,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:27,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:27,399 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:27,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:27,529 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:27,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27 WrapperNode [2020-09-24 18:19:27,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:27,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:27,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:27,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:27,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:27,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:27,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:27,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:27,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (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 18:19:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:29,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:29,103 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:29,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:29 BoogieIcfgContainer [2020-09-24 18:19:29,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:29,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:29,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:29,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:29,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:26" (1/3) ... [2020-09-24 18:19:29,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a89c9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:29, skipping insertion in model container [2020-09-24 18:19:29,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (2/3) ... [2020-09-24 18:19:29,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a89c9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:29, skipping insertion in model container [2020-09-24 18:19:29,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:29" (3/3) ... [2020-09-24 18:19:29,124 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-09-24 18:19:29,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:29,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:29,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:29,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:29,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:29,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:29,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:29,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:29,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:29,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:29,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 18:19:29,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:29,274 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] [2020-09-24 18:19:29,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:29,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:29,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1257233759, now seen corresponding path program 1 times [2020-09-24 18:19:29,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:29,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676338346] [2020-09-24 18:19:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:34,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 18:19:34,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:19:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 18:19:34,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:19:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:19:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:19:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:34,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:34,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:19:34,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:34,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:34,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:19:34,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:35,014 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 18:19:35,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676338346] [2020-09-24 18:19:35,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:35,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:35,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753968840] [2020-09-24 18:19:35,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:35,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:35,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:35,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:35,051 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:37,705 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-24 18:19:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:37,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-24 18:19:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:37,733 INFO L225 Difference]: With dead ends: 1270 [2020-09-24 18:19:37,734 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 18:19:37,743 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 18:19:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 18:19:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-24 18:19:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:19:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-24 18:19:37,855 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 132 [2020-09-24 18:19:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:37,857 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-24 18:19:37,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-24 18:19:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 18:19:37,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:37,864 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:19:37,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:37,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:37,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1159952749, now seen corresponding path program 1 times [2020-09-24 18:19:37,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:37,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239900011] [2020-09-24 18:19:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 18:19:42,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:19:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-24 18:19:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:19:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:43,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:43,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:43,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:19:43,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:19:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:19:43,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:19:43,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:19:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:43,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239900011] [2020-09-24 18:19:43,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:43,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:19:43,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000648883] [2020-09-24 18:19:43,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:19:43,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:43,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:19:43,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:19:43,305 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 8 states. [2020-09-24 18:19:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:46,578 INFO L93 Difference]: Finished difference Result 1936 states and 2500 transitions. [2020-09-24 18:19:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:19:46,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-24 18:19:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:46,590 INFO L225 Difference]: With dead ends: 1936 [2020-09-24 18:19:46,591 INFO L226 Difference]: Without dead ends: 1357 [2020-09-24 18:19:46,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:19:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-09-24 18:19:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1240. [2020-09-24 18:19:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-24 18:19:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1568 transitions. [2020-09-24 18:19:46,667 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1568 transitions. Word has length 154 [2020-09-24 18:19:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:46,668 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1568 transitions. [2020-09-24 18:19:46,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:19:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1568 transitions. [2020-09-24 18:19:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 18:19:46,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:46,676 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:46,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:46,676 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1406452310, now seen corresponding path program 1 times [2020-09-24 18:19:46,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:46,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861910825] [2020-09-24 18:19:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 18:19:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-24 18:19:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:19:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:19:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:51,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:51,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:51,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:51,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:19:51,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:51,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:51,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:51,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:19:51,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:19:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:19:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:19:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 18:19:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:19:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:19:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:52,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861910825] [2020-09-24 18:19:52,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:52,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:19:52,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873317649] [2020-09-24 18:19:52,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:52,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:52,235 INFO L87 Difference]: Start difference. First operand 1240 states and 1568 transitions. Second operand 7 states. [2020-09-24 18:19:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:55,291 INFO L93 Difference]: Finished difference Result 2834 states and 3711 transitions. [2020-09-24 18:19:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:19:55,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-24 18:19:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:55,314 INFO L225 Difference]: With dead ends: 2834 [2020-09-24 18:19:55,314 INFO L226 Difference]: Without dead ends: 1618 [2020-09-24 18:19:55,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:19:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2020-09-24 18:19:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1546. [2020-09-24 18:19:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-09-24 18:19:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1947 transitions. [2020-09-24 18:19:55,420 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1947 transitions. Word has length 186 [2020-09-24 18:19:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:55,421 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 1947 transitions. [2020-09-24 18:19:55,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1947 transitions. [2020-09-24 18:19:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 18:19:55,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:55,431 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:55,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:55,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:55,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1220889089, now seen corresponding path program 1 times [2020-09-24 18:19:55,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:55,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108652628] [2020-09-24 18:19:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:55,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 18:20:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 18:20:00,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:20:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:20:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:00,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:20:00,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:20:00,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:20:00,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:00,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:20:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 18:20:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:20:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 18:20:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:00,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108652628] [2020-09-24 18:20:00,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:00,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:00,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812895625] [2020-09-24 18:20:00,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:00,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:00,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:00,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:00,874 INFO L87 Difference]: Start difference. First operand 1546 states and 1947 transitions. Second operand 7 states. [2020-09-24 18:20:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:03,226 INFO L93 Difference]: Finished difference Result 3168 states and 4062 transitions. [2020-09-24 18:20:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:03,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-09-24 18:20:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:03,237 INFO L225 Difference]: With dead ends: 3168 [2020-09-24 18:20:03,238 INFO L226 Difference]: Without dead ends: 1795 [2020-09-24 18:20:03,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-09-24 18:20:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1585. [2020-09-24 18:20:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-09-24 18:20:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 1992 transitions. [2020-09-24 18:20:03,314 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 1992 transitions. Word has length 191 [2020-09-24 18:20:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:03,315 INFO L479 AbstractCegarLoop]: Abstraction has 1585 states and 1992 transitions. [2020-09-24 18:20:03,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 1992 transitions. [2020-09-24 18:20:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 18:20:03,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:03,324 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:03,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:03,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash -269597623, now seen corresponding path program 1 times [2020-09-24 18:20:03,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:03,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819308221] [2020-09-24 18:20:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:08,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 18:20:08,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:08,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:20:08,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:20:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:20:08,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:20:08,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:20:08,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:20:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:20:08,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 18:20:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:08,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819308221] [2020-09-24 18:20:08,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:08,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:08,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487236760] [2020-09-24 18:20:08,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:08,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:08,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:08,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:08,835 INFO L87 Difference]: Start difference. First operand 1585 states and 1992 transitions. Second operand 7 states. [2020-09-24 18:20:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:11,380 INFO L93 Difference]: Finished difference Result 3541 states and 4563 transitions. [2020-09-24 18:20:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:20:11,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-24 18:20:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:11,392 INFO L225 Difference]: With dead ends: 3541 [2020-09-24 18:20:11,392 INFO L226 Difference]: Without dead ends: 2129 [2020-09-24 18:20:11,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-09-24 18:20:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2062. [2020-09-24 18:20:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2062 states. [2020-09-24 18:20:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2597 transitions. [2020-09-24 18:20:11,459 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2597 transitions. Word has length 193 [2020-09-24 18:20:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:11,459 INFO L479 AbstractCegarLoop]: Abstraction has 2062 states and 2597 transitions. [2020-09-24 18:20:11,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2597 transitions. [2020-09-24 18:20:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-24 18:20:11,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:11,470 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:20:11,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:11,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:11,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1493837621, now seen corresponding path program 1 times [2020-09-24 18:20:11,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:11,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261028968] [2020-09-24 18:20:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking...