/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:12,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:12,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:12,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:12,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:12,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:12,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:12,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:12,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:12,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:12,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:12,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:12,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:12,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:12,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:12,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:12,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:12,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:12,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:12,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:12,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:12,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:12,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:12,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:12,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:12,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:12,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:12,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:12,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:12,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:12,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:12,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:12,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:12,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:12,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:12,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:12,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:12,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:12,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:12,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:12,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:12,825 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 05:37:12,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:12,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:12,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:12,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:12,886 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:12,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:12,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:12,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:12,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:12,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:12,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:12,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:12,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:12,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:12,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:12,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:12,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:12,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:12,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:12,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:12,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:12,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:12,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:12,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:12,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:12,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:12,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:12,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:12,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:12,893 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:13,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:13,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:13,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:13,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:13,405 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:13,406 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 05:37:13,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba34e4894/68bfdf7b99734d32919e0e4f35c2656a/FLAG7f1566ced [2020-09-25 05:37:14,204 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:14,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 05:37:14,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba34e4894/68bfdf7b99734d32919e0e4f35c2656a/FLAG7f1566ced [2020-09-25 05:37:14,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba34e4894/68bfdf7b99734d32919e0e4f35c2656a [2020-09-25 05:37:14,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:14,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:14,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:14,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:14,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:14,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:14" (1/1) ... [2020-09-25 05:37:14,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:14, skipping insertion in model container [2020-09-25 05:37:14,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:14" (1/1) ... [2020-09-25 05:37:14,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:14,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:14,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:14,962 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:15,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:15,316 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:15,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15 WrapperNode [2020-09-25 05:37:15,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:15,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:15,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:15,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:15,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:15,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:15,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:15,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:15,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (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 05:37:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:17,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:17,008 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:17,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:17 BoogieIcfgContainer [2020-09-25 05:37:17,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:17,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:17,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:17,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:17,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:14" (1/3) ... [2020-09-25 05:37:17,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:17, skipping insertion in model container [2020-09-25 05:37:17,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:15" (2/3) ... [2020-09-25 05:37:17,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:17, skipping insertion in model container [2020-09-25 05:37:17,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:17" (3/3) ... [2020-09-25 05:37:17,038 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-25 05:37:17,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:17,071 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:17,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:17,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:17,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:17,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:17,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:17,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:17,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:17,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:17,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:17,186 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 05:37:17,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:17,207 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] [2020-09-25 05:37:17,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:17,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:17,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-25 05:37:17,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:17,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 05:37:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:22,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:22,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:37:22,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:37:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:22,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:37:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 05:37:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:22,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:22,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:22,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:37:22,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:22,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:37:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:22,766 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 05:37:22,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 05:37:22,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:22,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:22,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152787704] [2020-09-25 05:37:22,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:22,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:22,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:22,806 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:25,181 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 05:37:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:25,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 05:37:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:25,224 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 05:37:25,224 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 05:37:25,234 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 05:37:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 05:37:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 05:37:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 05:37:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 05:37:25,343 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-25 05:37:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:25,344 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 05:37:25,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 05:37:25,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:37:25,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:25,353 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] [2020-09-25 05:37:25,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:25,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:25,354 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-25 05:37:25,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:25,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194425209] [2020-09-25 05:37:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:30,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:37:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 05:37:30,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:30,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:37:30,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:37:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:30,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:30,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:30,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:30,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:30,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:30,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:30,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:30,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:30,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:30,696 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 05:37:30,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194425209] [2020-09-25 05:37:30,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:30,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:30,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301441877] [2020-09-25 05:37:30,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:30,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:30,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:30,701 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 05:37:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:32,684 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 05:37:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:32,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 05:37:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:32,693 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 05:37:32,694 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 05:37:32,697 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 [2020-09-25 05:37:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 05:37:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 05:37:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 05:37:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 05:37:32,744 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 154 [2020-09-25 05:37:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:32,745 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 05:37:32,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 05:37:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 05:37:32,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:32,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:32,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:32,752 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:32,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1901105650, now seen corresponding path program 1 times [2020-09-25 05:37:32,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:32,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666345786] [2020-09-25 05:37:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:37,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 05:37:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:37:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:37,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:37:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:37,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:37,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:37,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:37:37,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:37,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:37,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:37:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 05:37:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:38,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:37:38,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:38,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666345786] [2020-09-25 05:37:38,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:38,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:37:38,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403795852] [2020-09-25 05:37:38,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:37:38,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:38,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:37:38,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:38,220 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 8 states. [2020-09-25 05:37:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:41,280 INFO L93 Difference]: Finished difference Result 3347 states and 4496 transitions. [2020-09-25 05:37:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:37:41,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-25 05:37:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:41,309 INFO L225 Difference]: With dead ends: 3347 [2020-09-25 05:37:41,309 INFO L226 Difference]: Without dead ends: 2408 [2020-09-25 05:37:41,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:37:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-25 05:37:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2311. [2020-09-25 05:37:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2020-09-25 05:37:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 2982 transitions. [2020-09-25 05:37:41,465 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 2982 transitions. Word has length 180 [2020-09-25 05:37:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:41,466 INFO L479 AbstractCegarLoop]: Abstraction has 2311 states and 2982 transitions. [2020-09-25 05:37:41,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:37:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 2982 transitions. [2020-09-25 05:37:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 05:37:41,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:41,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:41,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:41,481 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 361672380, now seen corresponding path program 1 times [2020-09-25 05:37:41,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:41,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563116443] [2020-09-25 05:37:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 05:37:46,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:37:46,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:37:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:37:46,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:46,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:46,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:37:46,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:37:46,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 05:37:46,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:37:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:46,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563116443] [2020-09-25 05:37:46,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:46,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:46,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363823042] [2020-09-25 05:37:46,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:46,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:46,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:46,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:46,847 INFO L87 Difference]: Start difference. First operand 2311 states and 2982 transitions. Second operand 7 states. [2020-09-25 05:37:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:50,154 INFO L93 Difference]: Finished difference Result 7306 states and 10326 transitions. [2020-09-25 05:37:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:37:50,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 05:37:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:50,193 INFO L225 Difference]: With dead ends: 7306 [2020-09-25 05:37:50,193 INFO L226 Difference]: Without dead ends: 5017 [2020-09-25 05:37:50,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2020-09-25 05:37:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 4885. [2020-09-25 05:37:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4885 states. [2020-09-25 05:37:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 6413 transitions. [2020-09-25 05:37:50,406 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 6413 transitions. Word has length 192 [2020-09-25 05:37:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:50,408 INFO L479 AbstractCegarLoop]: Abstraction has 4885 states and 6413 transitions. [2020-09-25 05:37:50,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 6413 transitions. [2020-09-25 05:37:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 05:37:50,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:50,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:50,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:50,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:50,440 INFO L82 PathProgramCache]: Analyzing trace with hash 504191434, now seen corresponding path program 1 times [2020-09-25 05:37:50,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:50,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96435646] [2020-09-25 05:37:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 05:37:55,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:55,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:37:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:37:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:55,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:37:55,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:37:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:37:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:37:55,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:37:55,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:37:55,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:55,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96435646] [2020-09-25 05:37:55,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:55,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:55,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778611698] [2020-09-25 05:37:55,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:55,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:55,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:55,814 INFO L87 Difference]: Start difference. First operand 4885 states and 6413 transitions. Second operand 7 states. [2020-09-25 05:37:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:59,666 INFO L93 Difference]: Finished difference Result 12055 states and 16477 transitions. [2020-09-25 05:37:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:37:59,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-25 05:37:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:59,668 INFO L225 Difference]: With dead ends: 12055 [2020-09-25 05:37:59,668 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:37:59,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:37:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:37:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:37:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:37:59,729 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-09-25 05:37:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:59,729 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:37:59,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:37:59,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:37:59,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:59,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.