/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:40,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:40,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:40,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:40,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:40,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:40,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:40,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:40,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:40,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:40,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:40,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:40,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:40,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:40,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:40,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:40,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:40,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:40,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:40,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:40,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:40,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:40,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:40,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:40,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:40,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:40,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:40,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:40,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:40,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:40,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:40,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:40,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:40,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:40,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:40,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:40,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:40,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:40,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:40,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:40,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:40,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:21:40,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:40,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:40,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:40,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:40,959 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:40,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:40,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:40,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:40,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:40,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:40,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:40,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:40,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:40,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:40,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:40,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:40,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:40,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:40,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:40,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:40,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:40,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:40,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:40,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:40,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:40,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:40,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:40,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:40,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:40,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:21:41,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:41,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:41,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:41,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:41,431 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:41,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label13.c [2020-09-24 18:21:41,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3b0e9b02/32c280ba273543ef88dea9e18510ac42/FLAG4d2008374 [2020-09-24 18:21:42,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:42,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label13.c [2020-09-24 18:21:42,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3b0e9b02/32c280ba273543ef88dea9e18510ac42/FLAG4d2008374 [2020-09-24 18:21:42,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3b0e9b02/32c280ba273543ef88dea9e18510ac42 [2020-09-24 18:21:42,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:42,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:42,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:42,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:42,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:42,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:42" (1/1) ... [2020-09-24 18:21:42,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40201f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:42, skipping insertion in model container [2020-09-24 18:21:42,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:42" (1/1) ... [2020-09-24 18:21:42,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:42,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:43,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:43,027 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:43,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:43,275 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:43,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43 WrapperNode [2020-09-24 18:21:43,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:43,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:43,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:43,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:43,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... [2020-09-24 18:21:43,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:43,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:43,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:43,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:43,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:44,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:44,767 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:44,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:44 BoogieIcfgContainer [2020-09-24 18:21:44,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:44,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:44,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:44,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:44,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:42" (1/3) ... [2020-09-24 18:21:44,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed4d233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:44, skipping insertion in model container [2020-09-24 18:21:44,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:43" (2/3) ... [2020-09-24 18:21:44,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed4d233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:44, skipping insertion in model container [2020-09-24 18:21:44,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:44" (3/3) ... [2020-09-24 18:21:44,786 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label13.c [2020-09-24 18:21:44,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:44,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:44,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:44,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:44,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:44,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:44,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:44,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:44,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:44,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:44,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 18:21:44,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:44,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:44,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:44,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1743137911, now seen corresponding path program 1 times [2020-09-24 18:21:44,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:44,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855242285] [2020-09-24 18:21:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 18:21:50,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:21:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 18:21:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 18:21:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:50,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855242285] [2020-09-24 18:21:50,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:50,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:50,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453124888] [2020-09-24 18:21:50,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:50,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:50,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:50,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:50,567 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:52,933 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 18:21:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:52,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-24 18:21:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:52,959 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 18:21:52,959 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 18:21:52,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 18:21:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 18:21:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:21:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:21:53,078 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 112 [2020-09-24 18:21:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:53,079 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:21:53,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:21:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 18:21:53,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:53,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:53,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:53,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:53,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2136460610, now seen corresponding path program 1 times [2020-09-24 18:21:53,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:53,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488065135] [2020-09-24 18:21:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:21:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:21:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:21:58,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:21:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 18:21:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:21:58,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:21:58,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:58,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:58,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:21:58,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:21:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:58,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488065135] [2020-09-24 18:21:58,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:58,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:58,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33538107] [2020-09-24 18:21:58,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:58,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:58,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:58,495 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:22:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:00,479 INFO L93 Difference]: Finished difference Result 1623 states and 1947 transitions. [2020-09-24 18:22:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:00,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-24 18:22:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:00,490 INFO L225 Difference]: With dead ends: 1623 [2020-09-24 18:22:00,491 INFO L226 Difference]: Without dead ends: 1024 [2020-09-24 18:22:00,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-24 18:22:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 927. [2020-09-24 18:22:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-09-24 18:22:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1114 transitions. [2020-09-24 18:22:00,567 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1114 transitions. Word has length 129 [2020-09-24 18:22:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:00,567 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1114 transitions. [2020-09-24 18:22:00,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1114 transitions. [2020-09-24 18:22:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 18:22:00,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:00,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:00,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:00,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:00,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash 316392811, now seen corresponding path program 1 times [2020-09-24 18:22:00,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:00,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860604681] [2020-09-24 18:22:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:00,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:22:05,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:22:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:22:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:22:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 18:22:05,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:05,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:05,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:22:05,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:22:05,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:22:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:05,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860604681] [2020-09-24 18:22:05,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:05,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:05,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523036054] [2020-09-24 18:22:05,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:05,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:05,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:05,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:05,946 INFO L87 Difference]: Start difference. First operand 927 states and 1114 transitions. Second operand 5 states. [2020-09-24 18:22:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:08,179 INFO L93 Difference]: Finished difference Result 2163 states and 2713 transitions. [2020-09-24 18:22:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:08,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-24 18:22:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:08,190 INFO L225 Difference]: With dead ends: 2163 [2020-09-24 18:22:08,190 INFO L226 Difference]: Without dead ends: 1258 [2020-09-24 18:22:08,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-09-24 18:22:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1231. [2020-09-24 18:22:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-09-24 18:22:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1463 transitions. [2020-09-24 18:22:08,233 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1463 transitions. Word has length 134 [2020-09-24 18:22:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:08,234 INFO L479 AbstractCegarLoop]: Abstraction has 1231 states and 1463 transitions. [2020-09-24 18:22:08,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1463 transitions. [2020-09-24 18:22:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 18:22:08,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:08,239 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:08,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:22:08,240 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1992987478, now seen corresponding path program 1 times [2020-09-24 18:22:08,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:08,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549273497] [2020-09-24 18:22:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 18:22:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:22:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:22:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:22:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:22:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:13,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:13,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:13,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:22:13,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:13,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:22:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:13,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:22:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:22:13,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:22:13,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:22:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:13,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549273497] [2020-09-24 18:22:13,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:13,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:13,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801888720] [2020-09-24 18:22:13,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:13,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:13,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:13,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:13,545 INFO L87 Difference]: Start difference. First operand 1231 states and 1463 transitions. Second operand 7 states. [2020-09-24 18:22:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:15,879 INFO L93 Difference]: Finished difference Result 2843 states and 3574 transitions. [2020-09-24 18:22:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:22:15,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-09-24 18:22:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:15,895 INFO L225 Difference]: With dead ends: 2843 [2020-09-24 18:22:15,895 INFO L226 Difference]: Without dead ends: 1634 [2020-09-24 18:22:15,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:22:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-09-24 18:22:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1566. [2020-09-24 18:22:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-24 18:22:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1851 transitions. [2020-09-24 18:22:15,975 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1851 transitions. Word has length 147 [2020-09-24 18:22:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:15,976 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1851 transitions. [2020-09-24 18:22:15,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1851 transitions. [2020-09-24 18:22:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:22:15,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:15,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:15,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:15,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:15,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2048684439, now seen corresponding path program 1 times [2020-09-24 18:22:15,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:15,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998794556] [2020-09-24 18:22:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:21,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:21,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 18:22:21,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:22:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-09-24 18:22:21,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 18:22:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:22:21,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:21,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:21,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:21,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:21,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:21,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:22:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:22:21,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:21,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998794556] [2020-09-24 18:22:21,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:21,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:21,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159592871] [2020-09-24 18:22:21,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:21,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:21,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:21,363 INFO L87 Difference]: Start difference. First operand 1566 states and 1851 transitions. Second operand 5 states. [2020-09-24 18:22:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:22,897 INFO L93 Difference]: Finished difference Result 4185 states and 5111 transitions. [2020-09-24 18:22:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:22,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-24 18:22:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:22,913 INFO L225 Difference]: With dead ends: 4185 [2020-09-24 18:22:22,913 INFO L226 Difference]: Without dead ends: 2641 [2020-09-24 18:22:22,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2020-09-24 18:22:22,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2329. [2020-09-24 18:22:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2020-09-24 18:22:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 2837 transitions. [2020-09-24 18:22:22,986 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 2837 transitions. Word has length 155 [2020-09-24 18:22:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:22,987 INFO L479 AbstractCegarLoop]: Abstraction has 2329 states and 2837 transitions. [2020-09-24 18:22:22,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 2837 transitions. [2020-09-24 18:22:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:22:22,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:22,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:22,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:22,995 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -266513679, now seen corresponding path program 1 times [2020-09-24 18:22:22,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:22,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794717724] [2020-09-24 18:22:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:27,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 18:22:27,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:22:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4063 [2020-09-24 18:22:27,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:22:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:22:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:27,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:27,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:27,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:22:27,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:27,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:27,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:27,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:27,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:22:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:22:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:22:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:27,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:22:27,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 18:22:27,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:22:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:27,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794717724] [2020-09-24 18:22:27,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:27,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:27,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784074287] [2020-09-24 18:22:27,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:27,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:27,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:27,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:27,394 INFO L87 Difference]: Start difference. First operand 2329 states and 2837 transitions. Second operand 7 states. [2020-09-24 18:22:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:30,144 INFO L93 Difference]: Finished difference Result 5210 states and 6524 transitions. [2020-09-24 18:22:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:22:30,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 18:22:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:30,160 INFO L225 Difference]: With dead ends: 5210 [2020-09-24 18:22:30,160 INFO L226 Difference]: Without dead ends: 2903 [2020-09-24 18:22:30,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:22:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-09-24 18:22:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2411. [2020-09-24 18:22:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-09-24 18:22:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 2974 transitions. [2020-09-24 18:22:30,235 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 2974 transitions. Word has length 181 [2020-09-24 18:22:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:30,236 INFO L479 AbstractCegarLoop]: Abstraction has 2411 states and 2974 transitions. [2020-09-24 18:22:30,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 2974 transitions. [2020-09-24 18:22:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 18:22:30,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:30,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:22:30,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:30,246 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1060232846, now seen corresponding path program 1 times [2020-09-24 18:22:30,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:30,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204947721] [2020-09-24 18:22:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking...