/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:16,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:16,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:16,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:16,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:16,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:16,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:16,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:16,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:16,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:16,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:16,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:16,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:16,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:16,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:16,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:16,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:16,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:16,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:16,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:16,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:16,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:16,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:17,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:17,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:17,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:17,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:17,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:17,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:17,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:17,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:17,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:17,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:17,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:17,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:17,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:17,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:17,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:17,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:17,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:17,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:17,019 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 [2020-09-25 10:10:17,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:17,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:17,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:17,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:17,064 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:17,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:17,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:17,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:17,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:17,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:17,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:17,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:17,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:17,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:17,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:17,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:17,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:17,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:17,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:17,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:17,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:17,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:17,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:17,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:17,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:17,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:17,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:17,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:17,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:17,071 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:17,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:17,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:17,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:17,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:17,562 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:17,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 10:10:17,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93e5a17b9/1c0863cad94148858c71c3a8aff5aca4/FLAG9a764c4d7 [2020-09-25 10:10:18,302 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:18,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 10:10:18,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93e5a17b9/1c0863cad94148858c71c3a8aff5aca4/FLAG9a764c4d7 [2020-09-25 10:10:18,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93e5a17b9/1c0863cad94148858c71c3a8aff5aca4 [2020-09-25 10:10:18,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:18,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:18,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:18,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:18,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:18,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:18" (1/1) ... [2020-09-25 10:10:18,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4b2247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:18, skipping insertion in model container [2020-09-25 10:10:18,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:18" (1/1) ... [2020-09-25 10:10:18,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:18,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:19,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:19,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:19,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:19,310 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:19,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19 WrapperNode [2020-09-25 10:10:19,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:19,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:19,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:19,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:19,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (1/1) ... [2020-09-25 10:10:19,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:19,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:19,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:19,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:19,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (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 [2020-09-25 10:10:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:20,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:20,730 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:20,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:20 BoogieIcfgContainer [2020-09-25 10:10:20,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:20,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:20,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:20,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:20,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:18" (1/3) ... [2020-09-25 10:10:20,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf83c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:20, skipping insertion in model container [2020-09-25 10:10:20,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:19" (2/3) ... [2020-09-25 10:10:20,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf83c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:20, skipping insertion in model container [2020-09-25 10:10:20,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:20" (3/3) ... [2020-09-25 10:10:20,749 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 10:10:20,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:20,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:20,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:20,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:20,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:20,828 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:20,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:20,828 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:20,829 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:20,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:20,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 10:10:20,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:20,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:20,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 10:10:20,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:20,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185321501] [2020-09-25 10:10:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:26,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 10:10:26,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:10:26,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:26,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 10:10:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:26,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:10:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:26,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:26,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185321501] [2020-09-25 10:10:26,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:26,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:26,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754677592] [2020-09-25 10:10:26,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:26,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:26,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:26,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:26,548 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:28,671 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:10:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:28,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 10:10:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:28,700 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:10:28,700 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:10:28,717 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 [2020-09-25 10:10:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:10:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:10:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:10:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:10:28,827 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 10:10:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:28,828 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:10:28,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:10:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:10:28,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:28,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:28,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:28,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:28,838 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 10:10:28,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:28,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523548234] [2020-09-25 10:10:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:33,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 10:10:33,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:33,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:10:33,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:33,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:10:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 10:10:33,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:10:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:34,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:10:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:34,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:10:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:34,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523548234] [2020-09-25 10:10:34,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:34,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:34,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327408544] [2020-09-25 10:10:34,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:34,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:34,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:34,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:34,159 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 10:10:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:36,308 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 10:10:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:36,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 10:10:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:36,326 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 10:10:36,326 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 10:10:36,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 10:10:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 10:10:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 10:10:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 10:10:36,404 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 10:10:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:36,408 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 10:10:36,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 10:10:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 10:10:36,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:36,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:36,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:36,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 10:10:36,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:36,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119693291] [2020-09-25 10:10:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:41,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 10:10:41,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:10:41,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:41,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:10:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 10:10:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:42,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:42,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:10:42,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:42,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:10:43,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:10:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:43,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:10:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:43,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119693291] [2020-09-25 10:10:43,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:43,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:10:43,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644261565] [2020-09-25 10:10:43,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:10:43,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:43,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:10:43,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:10:43,367 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 20 states. [2020-09-25 10:10:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:48,604 INFO L93 Difference]: Finished difference Result 4181 states and 5729 transitions. [2020-09-25 10:10:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:10:48,606 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 187 [2020-09-25 10:10:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:48,629 INFO L225 Difference]: With dead ends: 4181 [2020-09-25 10:10:48,633 INFO L226 Difference]: Without dead ends: 2904 [2020-09-25 10:10:48,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=375, Invalid=957, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 10:10:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-09-25 10:10:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2278. [2020-09-25 10:10:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2020-09-25 10:10:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2878 transitions. [2020-09-25 10:10:48,762 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2878 transitions. Word has length 187 [2020-09-25 10:10:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:48,762 INFO L479 AbstractCegarLoop]: Abstraction has 2278 states and 2878 transitions. [2020-09-25 10:10:48,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 10:10:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2878 transitions. [2020-09-25 10:10:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 10:10:48,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:48,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:48,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:48,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:48,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:48,785 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 10:10:48,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:48,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292259838] [2020-09-25 10:10:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 10:10:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:10:53,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:53,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:10:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:10:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:54,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:54,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:54,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:10:54,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:54,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:10:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:54,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292259838] [2020-09-25 10:10:54,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:54,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:10:54,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982611098] [2020-09-25 10:10:54,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:10:54,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:54,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:10:54,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:54,419 INFO L87 Difference]: Start difference. First operand 2278 states and 2878 transitions. Second operand 11 states. [2020-09-25 10:10:55,139 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-25 10:10:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:58,068 INFO L93 Difference]: Finished difference Result 6017 states and 7920 transitions. [2020-09-25 10:10:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:58,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-09-25 10:10:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:58,081 INFO L225 Difference]: With dead ends: 6017 [2020-09-25 10:10:58,081 INFO L226 Difference]: Without dead ends: 2221 [2020-09-25 10:10:58,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:10:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2020-09-25 10:10:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2197. [2020-09-25 10:10:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2197 states. [2020-09-25 10:10:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 2712 transitions. [2020-09-25 10:10:58,164 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 2712 transitions. Word has length 197 [2020-09-25 10:10:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:58,164 INFO L479 AbstractCegarLoop]: Abstraction has 2197 states and 2712 transitions. [2020-09-25 10:10:58,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:10:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 2712 transitions. [2020-09-25 10:10:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 10:10:58,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:58,175 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:58,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:58,175 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:58,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 10:10:58,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:58,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800394080] [2020-09-25 10:10:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 10:11:03,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:11:03,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:11:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:11:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:11:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 10:11:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:11:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:03,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:11:03,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:11:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:11:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 10:11:03,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 10:11:03,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:11:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:11:04,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800394080] [2020-09-25 10:11:04,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:04,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:11:04,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121901052] [2020-09-25 10:11:04,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:11:04,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:04,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:11:04,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:11:04,148 INFO L87 Difference]: Start difference. First operand 2197 states and 2712 transitions. Second operand 14 states.