/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=1000 --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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:26:15,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:26:15,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:26:15,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:26:15,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:26:15,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:26:15,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:26:15,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:26:15,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:26:15,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:26:15,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:26:15,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:26:15,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:26:15,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:26:15,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:26:15,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:26:15,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:26:15,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:26:15,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:26:15,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:26:15,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:26:15,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:26:15,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:26:15,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:26:15,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:26:15,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:26:15,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:26:15,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:26:15,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:26:15,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:26:15,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:26:15,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:26:15,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:26:15,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:26:15,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:26:15,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:26:15,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:26:15,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:26:15,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:26:15,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:26:15,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:26:15,988 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 19:26:16,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:26:16,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:26:16,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:26:16,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:26:16,015 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:26:16,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:26:16,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:26:16,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:26:16,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:26:16,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:26:16,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:26:16,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:26:16,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:26:16,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:26:16,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:26:16,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:26:16,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:26:16,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:26:16,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:26:16,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:26:16,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:26:16,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:16,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:26:16,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:26:16,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:26:16,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:26:16,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:26:16,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:26:16,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:26:16,021 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:26:16,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:26:16,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:26:16,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:26:16,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:26:16,536 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:26:16,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-24 19:26:16,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b4e0a54/7759477be15c4506b34dc962ec7b48f2/FLAGcca457f48 [2020-09-24 19:26:17,267 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:26:17,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-24 19:26:17,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b4e0a54/7759477be15c4506b34dc962ec7b48f2/FLAGcca457f48 [2020-09-24 19:26:17,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b4e0a54/7759477be15c4506b34dc962ec7b48f2 [2020-09-24 19:26:17,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:26:17,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:26:17,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:17,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:26:17,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:26:17,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:17" (1/1) ... [2020-09-24 19:26:17,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:17, skipping insertion in model container [2020-09-24 19:26:17,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:17" (1/1) ... [2020-09-24 19:26:17,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:26:17,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:26:18,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:18,108 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:26:18,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:18,369 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:26:18,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18 WrapperNode [2020-09-24 19:26:18,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:18,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:26:18,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:26:18,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:26:18,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:26:18,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:26:18,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:26:18,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:26:18,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (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 19:26:18,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:26:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:26:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:26:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:26:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:26:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:26:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:26:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:26:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:26:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:26:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:26:20,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:26:20,043 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:26:20,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:20 BoogieIcfgContainer [2020-09-24 19:26:20,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:26:20,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:26:20,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:26:20,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:26:20,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:26:17" (1/3) ... [2020-09-24 19:26:20,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:20, skipping insertion in model container [2020-09-24 19:26:20,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (2/3) ... [2020-09-24 19:26:20,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:20, skipping insertion in model container [2020-09-24 19:26:20,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:20" (3/3) ... [2020-09-24 19:26:20,063 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-24 19:26:20,076 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:26:20,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:26:20,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:26:20,147 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:26:20,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:26:20,147 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:26:20,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:26:20,148 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:26:20,148 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:26:20,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:26:20,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:26:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:26:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 19:26:20,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:20,201 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] [2020-09-24 19:26:20,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:20,211 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-24 19:26:20,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:20,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-24 19:26:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:21,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-24 19:26:21,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:26:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:26:21,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:26:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:26:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:26:21,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:21,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:21,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:26:21,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:26:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:21,769 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 19:26:21,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-24 19:26:21,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:21,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:26:21,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990704183] [2020-09-24 19:26:21,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:26:21,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:21,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:26:21,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:26:21,805 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:26:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:23,955 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 19:26:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:23,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-24 19:26:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:23,985 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 19:26:23,986 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 19:26:23,995 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 19:26:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 19:26:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 19:26:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:26:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 19:26:24,104 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-24 19:26:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:24,106 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 19:26:24,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:26:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 19:26:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 19:26:24,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:24,114 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:26:24,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:24,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1195739072, now seen corresponding path program 1 times [2020-09-24 19:26:24,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:24,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497466847] [2020-09-24 19:26:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:25,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 19:26:25,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:26:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:26:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 19:26:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:25,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:25,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:26:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:25,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:25,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:26:25,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:26:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:25,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497466847] [2020-09-24 19:26:25,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:25,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:25,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159525213] [2020-09-24 19:26:25,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:25,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:25,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:25,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:25,447 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-24 19:26:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:27,347 INFO L93 Difference]: Finished difference Result 1360 states and 1670 transitions. [2020-09-24 19:26:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:27,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-24 19:26:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:27,354 INFO L225 Difference]: With dead ends: 1360 [2020-09-24 19:26:27,355 INFO L226 Difference]: Without dead ends: 781 [2020-09-24 19:26:27,358 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 19:26:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-24 19:26:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 748. [2020-09-24 19:26:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-24 19:26:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 893 transitions. [2020-09-24 19:26:27,396 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 893 transitions. Word has length 125 [2020-09-24 19:26:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:27,397 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 893 transitions. [2020-09-24 19:26:27,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 893 transitions. [2020-09-24 19:26:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 19:26:27,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:27,402 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:26:27,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:27,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-24 19:26:27,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:27,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630393440] [2020-09-24 19:26:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 19:26:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:26:28,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:26:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:26:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:28,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:28,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:28,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:26:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:26:28,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:26:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:28,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630393440] [2020-09-24 19:26:28,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:28,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:28,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705613590] [2020-09-24 19:26:28,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:28,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:28,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:28,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:28,720 INFO L87 Difference]: Start difference. First operand 748 states and 893 transitions. Second operand 5 states. [2020-09-24 19:26:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:30,583 INFO L93 Difference]: Finished difference Result 1957 states and 2422 transitions. [2020-09-24 19:26:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:30,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-24 19:26:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:30,592 INFO L225 Difference]: With dead ends: 1957 [2020-09-24 19:26:30,593 INFO L226 Difference]: Without dead ends: 1233 [2020-09-24 19:26:30,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-24 19:26:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1036. [2020-09-24 19:26:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-24 19:26:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1263 transitions. [2020-09-24 19:26:30,650 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1263 transitions. Word has length 134 [2020-09-24 19:26:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:30,652 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1263 transitions. [2020-09-24 19:26:30,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1263 transitions. [2020-09-24 19:26:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 19:26:30,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:30,661 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, 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] [2020-09-24 19:26:30,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:30,664 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:30,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:30,664 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-24 19:26:30,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:30,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705060161] [2020-09-24 19:26:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 19:26:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-24 19:26:31,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:26:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 19:26:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:31,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:31,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:26:31,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:31,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:31,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:26:31,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:26:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:32,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:32,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 19:26:32,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:26:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:32,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705060161] [2020-09-24 19:26:32,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:32,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:32,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129199428] [2020-09-24 19:26:32,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:32,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:32,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:32,179 INFO L87 Difference]: Start difference. First operand 1036 states and 1263 transitions. Second operand 7 states. [2020-09-24 19:26:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:34,986 INFO L93 Difference]: Finished difference Result 3055 states and 4072 transitions. [2020-09-24 19:26:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:34,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 19:26:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:35,008 INFO L225 Difference]: With dead ends: 3055 [2020-09-24 19:26:35,009 INFO L226 Difference]: Without dead ends: 2043 [2020-09-24 19:26:35,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 19:26:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2020-09-24 19:26:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1846. [2020-09-24 19:26:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1846 states. [2020-09-24 19:26:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2275 transitions. [2020-09-24 19:26:35,114 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2275 transitions. Word has length 181 [2020-09-24 19:26:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:35,114 INFO L479 AbstractCegarLoop]: Abstraction has 1846 states and 2275 transitions. [2020-09-24 19:26:35,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2275 transitions. [2020-09-24 19:26:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 19:26:35,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:35,124 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, 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] [2020-09-24 19:26:35,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:35,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1738067261, now seen corresponding path program 1 times [2020-09-24 19:26:35,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:35,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061514576] [2020-09-24 19:26:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 19:26:36,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:36,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:26:36,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:26:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:36,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:36,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:36,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:36,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:26:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:36,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:26:36,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 19:26:36,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:26:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:36,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061514576] [2020-09-24 19:26:36,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:36,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:36,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43770770] [2020-09-24 19:26:36,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:36,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:36,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:36,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:36,805 INFO L87 Difference]: Start difference. First operand 1846 states and 2275 transitions. Second operand 7 states. [2020-09-24 19:26:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:39,329 INFO L93 Difference]: Finished difference Result 3945 states and 5008 transitions. [2020-09-24 19:26:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:39,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-24 19:26:39,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:39,344 INFO L225 Difference]: With dead ends: 3945 [2020-09-24 19:26:39,344 INFO L226 Difference]: Without dead ends: 1948 [2020-09-24 19:26:39,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 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 19:26:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-09-24 19:26:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1836. [2020-09-24 19:26:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2020-09-24 19:26:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2253 transitions. [2020-09-24 19:26:39,417 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2253 transitions. Word has length 182 [2020-09-24 19:26:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:39,418 INFO L479 AbstractCegarLoop]: Abstraction has 1836 states and 2253 transitions. [2020-09-24 19:26:39,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2253 transitions. [2020-09-24 19:26:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 19:26:39,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:39,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:39,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:39,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:39,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:39,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1145569462, now seen corresponding path program 1 times [2020-09-24 19:26:39,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:39,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464897830] [2020-09-24 19:26:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 19:26:40,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:26:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 19:26:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:26:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:40,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:40,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:40,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:40,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:40,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:26:40,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:40,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 19:26:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:26:40,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:26:40,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:26:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:40,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464897830] [2020-09-24 19:26:40,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:40,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:40,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521392737] [2020-09-24 19:26:40,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:40,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:40,937 INFO L87 Difference]: Start difference. First operand 1836 states and 2253 transitions. Second operand 7 states. [2020-09-24 19:26:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:42,988 INFO L93 Difference]: Finished difference Result 4109 states and 5164 transitions. [2020-09-24 19:26:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:42,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-24 19:26:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:43,037 INFO L225 Difference]: With dead ends: 4109 [2020-09-24 19:26:43,037 INFO L226 Difference]: Without dead ends: 2297 [2020-09-24 19:26:43,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 19:26:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-24 19:26:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1910. [2020-09-24 19:26:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2020-09-24 19:26:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2207 transitions. [2020-09-24 19:26:43,111 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2207 transitions. Word has length 186 [2020-09-24 19:26:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:43,111 INFO L479 AbstractCegarLoop]: Abstraction has 1910 states and 2207 transitions. [2020-09-24 19:26:43,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2207 transitions. [2020-09-24 19:26:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 19:26:43,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:43,121 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, 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] [2020-09-24 19:26:43,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:43,122 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:43,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1707194346, now seen corresponding path program 1 times [2020-09-24 19:26:43,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:43,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921852031] [2020-09-24 19:26:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 19:26:44,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-24 19:26:44,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:26:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:26:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:44,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:26:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:26:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:44,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:26:44,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:44,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:26:44,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:26:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:44,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 19:26:44,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921852031] [2020-09-24 19:26:44,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:44,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:44,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766492350] [2020-09-24 19:26:44,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:44,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:44,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:44,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:44,604 INFO L87 Difference]: Start difference. First operand 1910 states and 2207 transitions. Second operand 7 states. [2020-09-24 19:26:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:47,256 INFO L93 Difference]: Finished difference Result 4320 states and 5123 transitions. [2020-09-24 19:26:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:47,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-24 19:26:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:47,270 INFO L225 Difference]: With dead ends: 4320 [2020-09-24 19:26:47,271 INFO L226 Difference]: Without dead ends: 2434 [2020-09-24 19:26:47,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 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 19:26:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-09-24 19:26:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2221. [2020-09-24 19:26:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2020-09-24 19:26:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2535 transitions. [2020-09-24 19:26:47,339 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2535 transitions. Word has length 188 [2020-09-24 19:26:47,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:47,339 INFO L479 AbstractCegarLoop]: Abstraction has 2221 states and 2535 transitions. [2020-09-24 19:26:47,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2535 transitions. [2020-09-24 19:26:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 19:26:47,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:47,349 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:47,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:47,350 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash -702553439, now seen corresponding path program 1 times [2020-09-24 19:26:47,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:47,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407047371] [2020-09-24 19:26:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-24 19:26:48,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:26:48,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:26:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:26:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:48,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:26:48,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:26:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:48,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:26:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:26:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:48,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:26:48,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:26:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 19:26:49,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407047371] [2020-09-24 19:26:49,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:49,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:49,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553766973] [2020-09-24 19:26:49,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:49,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:49,006 INFO L87 Difference]: Start difference. First operand 2221 states and 2535 transitions. Second operand 8 states. [2020-09-24 19:26:50,113 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-24 19:26:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:52,824 INFO L93 Difference]: Finished difference Result 4628 states and 5300 transitions. [2020-09-24 19:26:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:26:52,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-09-24 19:26:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:52,839 INFO L225 Difference]: With dead ends: 4628 [2020-09-24 19:26:52,839 INFO L226 Difference]: Without dead ends: 2431 [2020-09-24 19:26:52,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:26:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2020-09-24 19:26:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2348. [2020-09-24 19:26:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2020-09-24 19:26:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 2614 transitions. [2020-09-24 19:26:52,950 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 2614 transitions. Word has length 217 [2020-09-24 19:26:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:52,950 INFO L479 AbstractCegarLoop]: Abstraction has 2348 states and 2614 transitions. [2020-09-24 19:26:52,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 2614 transitions. [2020-09-24 19:26:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 19:26:52,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:52,960 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:52,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:52,960 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:52,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1673890187, now seen corresponding path program 1 times [2020-09-24 19:26:52,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:52,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531162903] [2020-09-24 19:26:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-24 19:26:54,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:26:54,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:26:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:26:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:54,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:54,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:26:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:54,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:26:54,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:54,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:26:54,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:26:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:26:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:54,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:26:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:26:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 115 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-24 19:26:54,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531162903] [2020-09-24 19:26:54,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:54,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:54,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427954470] [2020-09-24 19:26:54,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:54,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:54,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:54,400 INFO L87 Difference]: Start difference. First operand 2348 states and 2614 transitions. Second operand 7 states. [2020-09-24 19:26:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:56,735 INFO L93 Difference]: Finished difference Result 4997 states and 5584 transitions. [2020-09-24 19:26:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:26:56,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-24 19:26:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:56,746 INFO L225 Difference]: With dead ends: 4997 [2020-09-24 19:26:56,746 INFO L226 Difference]: Without dead ends: 2493 [2020-09-24 19:26:56,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:26:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-09-24 19:26:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2456. [2020-09-24 19:26:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2020-09-24 19:26:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 2737 transitions. [2020-09-24 19:26:56,813 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 2737 transitions. Word has length 231 [2020-09-24 19:26:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:56,813 INFO L479 AbstractCegarLoop]: Abstraction has 2456 states and 2737 transitions. [2020-09-24 19:26:56,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 2737 transitions. [2020-09-24 19:26:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 19:26:56,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:56,823 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:26:56,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:56,823 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:56,824 INFO L82 PathProgramCache]: Analyzing trace with hash 665908200, now seen corresponding path program 1 times [2020-09-24 19:26:56,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:56,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713973947] [2020-09-24 19:26:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 19:26:57,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:57,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:26:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:26:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:57,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:57,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:26:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:58,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 19:26:58,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:58,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:26:58,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:26:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:58,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 19:26:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:26:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:58,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 122 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 19:26:58,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713973947] [2020-09-24 19:26:58,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:58,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:58,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035088551] [2020-09-24 19:26:58,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:58,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:58,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:58,571 INFO L87 Difference]: Start difference. First operand 2456 states and 2737 transitions. Second operand 8 states. [2020-09-24 19:27:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:01,948 INFO L93 Difference]: Finished difference Result 5572 states and 6439 transitions. [2020-09-24 19:27:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:27:01,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-09-24 19:27:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:01,963 INFO L225 Difference]: With dead ends: 5572 [2020-09-24 19:27:01,963 INFO L226 Difference]: Without dead ends: 3140 [2020-09-24 19:27:01,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:27:01,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-09-24 19:27:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2599. [2020-09-24 19:27:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2599 states. [2020-09-24 19:27:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 2886 transitions. [2020-09-24 19:27:02,041 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 2886 transitions. Word has length 231 [2020-09-24 19:27:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:02,041 INFO L479 AbstractCegarLoop]: Abstraction has 2599 states and 2886 transitions. [2020-09-24 19:27:02,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:27:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 2886 transitions. [2020-09-24 19:27:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 19:27:02,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:02,054 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:27:02,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:27:02,055 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:02,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1170644137, now seen corresponding path program 1 times [2020-09-24 19:27:02,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:02,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407895929] [2020-09-24 19:27:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:02,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-24 19:27:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:27:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:27:03,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 19:27:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:27:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:27:03,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:27:03,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:03,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:27:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:27:03,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:27:03,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:27:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 19:27:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:27:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:03,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 19:27:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:27:03,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:27:03,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:27:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:03,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 130 proven. 14 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-24 19:27:03,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407895929] [2020-09-24 19:27:03,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:03,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:03,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976708070] [2020-09-24 19:27:03,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:03,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:03,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:03,591 INFO L87 Difference]: Start difference. First operand 2599 states and 2886 transitions. Second operand 7 states. [2020-09-24 19:27:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:06,000 INFO L93 Difference]: Finished difference Result 5707 states and 6379 transitions. [2020-09-24 19:27:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:27:06,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-09-24 19:27:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:06,013 INFO L225 Difference]: With dead ends: 5707 [2020-09-24 19:27:06,014 INFO L226 Difference]: Without dead ends: 3132 [2020-09-24 19:27:06,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:27:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-09-24 19:27:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 2905. [2020-09-24 19:27:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2020-09-24 19:27:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3223 transitions. [2020-09-24 19:27:06,085 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3223 transitions. Word has length 238 [2020-09-24 19:27:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:06,085 INFO L479 AbstractCegarLoop]: Abstraction has 2905 states and 3223 transitions. [2020-09-24 19:27:06,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3223 transitions. [2020-09-24 19:27:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 19:27:06,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:06,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:27:06,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:27:06,097 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash 639705836, now seen corresponding path program 1 times [2020-09-24 19:27:06,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:06,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990567734] [2020-09-24 19:27:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking...