/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=0.3 --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/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:07,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:07,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:07,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:07,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:07,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:07,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:07,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:07,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:07,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:07,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:07,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:07,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:07,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:07,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:07,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:07,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:07,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:07,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:07,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:07,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:07,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:07,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:07,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:07,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:07,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:07,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:07,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:07,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:07,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:07,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:07,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:07,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:07,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:07,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:07,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:07,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:07,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:07,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:07,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:07,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:07,947 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 12:26:07,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:07,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:07,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:07,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:07,978 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:07,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:07,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:07,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:07,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:07,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:07,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:07,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:07,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:07,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:07,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:07,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:07,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:07,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:07,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:07,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:07,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:07,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:07,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:07,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:07,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:07,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:07,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:07,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:07,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:07,983 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:26:08,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:08,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:08,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:08,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:08,480 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:08,482 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 12:26:08,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87ed2ad31/69d15c8522a14f47af875022fe91a059/FLAGbb484f3c8 [2020-09-25 12:26:09,219 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:09,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 12:26:09,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87ed2ad31/69d15c8522a14f47af875022fe91a059/FLAGbb484f3c8 [2020-09-25 12:26:09,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87ed2ad31/69d15c8522a14f47af875022fe91a059 [2020-09-25 12:26:09,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:09,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:09,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:09,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:09,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:09,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:09,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09, skipping insertion in model container [2020-09-25 12:26:09,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:09,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:09,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:10,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:10,121 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:10,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:10,321 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:10,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10 WrapperNode [2020-09-25 12:26:10,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:10,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:10,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:10,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:10,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (1/1) ... [2020-09-25 12:26:10,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:10,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:10,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:10,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:10,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (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 12:26:10,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:12,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:12,101 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:12,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:12 BoogieIcfgContainer [2020-09-25 12:26:12,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:12,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:12,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:12,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:12,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:09" (1/3) ... [2020-09-25 12:26:12,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:12, skipping insertion in model container [2020-09-25 12:26:12,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:10" (2/3) ... [2020-09-25 12:26:12,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:12, skipping insertion in model container [2020-09-25 12:26:12,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:12" (3/3) ... [2020-09-25 12:26:12,121 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 12:26:12,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:12,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:12,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:12,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:12,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:12,202 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:12,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:12,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:12,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:12,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:12,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 12:26:12,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:12,246 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] [2020-09-25 12:26:12,247 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 12:26:12,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:12,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498190326] [2020-09-25 12:26:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:26:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-09-25 12:26:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:26:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:13,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:13,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:26:13,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:13,442 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 12:26:13,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498190326] [2020-09-25 12:26:13,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:13,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:26:13,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867240323] [2020-09-25 12:26:13,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:13,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:13,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:13,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:13,478 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:26:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:16,088 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 12:26:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:26:16,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 12:26:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:16,119 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 12:26:16,119 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 12:26:16,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 12:26:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 12:26:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:26:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 12:26:16,253 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 12:26:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:16,253 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 12:26:16,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 12:26:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 12:26:16,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:16,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:16,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:16,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 12:26:16,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:16,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066493224] [2020-09-25 12:26:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 12:26:21,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:21,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:26:21,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 12:26:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:21,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:21,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:21,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:26:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 12:26:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:26:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:22,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066493224] [2020-09-25 12:26:22,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:22,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:22,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443824993] [2020-09-25 12:26:22,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:22,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:22,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:22,030 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 12:26:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:24,280 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 12:26:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:26:24,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-25 12:26:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:24,291 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 12:26:24,292 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 12:26:24,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 12:26:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 12:26:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 12:26:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 12:26:24,339 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 188 [2020-09-25 12:26:24,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:24,340 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 12:26:24,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:24,340 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 12:26:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 12:26:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:24,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:24,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:24,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1891490353, now seen corresponding path program 1 times [2020-09-25 12:26:24,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:24,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909595180] [2020-09-25 12:26:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:26:29,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:26:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 12:26:29,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 12:26:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:30,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909595180] [2020-09-25 12:26:30,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:30,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:30,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079494486] [2020-09-25 12:26:30,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:30,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:30,063 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 7 states. [2020-09-25 12:26:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:32,373 INFO L93 Difference]: Finished difference Result 2186 states and 3025 transitions. [2020-09-25 12:26:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:26:32,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 12:26:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:32,389 INFO L225 Difference]: With dead ends: 2186 [2020-09-25 12:26:32,389 INFO L226 Difference]: Without dead ends: 1349 [2020-09-25 12:26:32,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-25 12:26:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 855. [2020-09-25 12:26:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-09-25 12:26:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1048 transitions. [2020-09-25 12:26:32,457 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1048 transitions. Word has length 195 [2020-09-25 12:26:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:32,459 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1048 transitions. [2020-09-25 12:26:32,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1048 transitions. [2020-09-25 12:26:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 12:26:32,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:32,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:32,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:32,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:32,471 INFO L82 PathProgramCache]: Analyzing trace with hash -779241874, now seen corresponding path program 1 times [2020-09-25 12:26:32,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:32,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393278015] [2020-09-25 12:26:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:32,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 12:26:37,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-09-25 12:26:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:37,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:26:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 12:26:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:37,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:37,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:37,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:37,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 12:26:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:38,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:26:38,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 12:26:38,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:38,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:38,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:26:38,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:26:39,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393278015] [2020-09-25 12:26:39,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:39,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:26:39,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299857104] [2020-09-25 12:26:39,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:26:39,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:26:39,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:26:39,285 INFO L87 Difference]: Start difference. First operand 855 states and 1048 transitions. Second operand 9 states. [2020-09-25 12:26:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:42,044 INFO L93 Difference]: Finished difference Result 2066 states and 2658 transitions. [2020-09-25 12:26:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:26:42,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 267 [2020-09-25 12:26:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:42,052 INFO L225 Difference]: With dead ends: 2066 [2020-09-25 12:26:42,052 INFO L226 Difference]: Without dead ends: 1352 [2020-09-25 12:26:42,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:26:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-09-25 12:26:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1164. [2020-09-25 12:26:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2020-09-25 12:26:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1413 transitions. [2020-09-25 12:26:42,092 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1413 transitions. Word has length 267 [2020-09-25 12:26:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:42,092 INFO L479 AbstractCegarLoop]: Abstraction has 1164 states and 1413 transitions. [2020-09-25 12:26:42,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:26:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1413 transitions. [2020-09-25 12:26:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 12:26:42,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:42,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:42,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:42,099 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 266332152, now seen corresponding path program 1 times [2020-09-25 12:26:42,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:42,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428309766] [2020-09-25 12:26:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:47,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-09-25 12:26:47,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:26:47,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:47,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:47,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 12:26:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:47,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:47,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:26:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:47,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:47,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:47,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 12:26:47,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:47,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:47,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:47,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:47,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:47,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:47,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:26:47,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 12:26:47,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:47,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:26:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:26:48,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428309766] [2020-09-25 12:26:48,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:48,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:26:48,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142242960] [2020-09-25 12:26:48,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:48,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:48,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:48,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:48,207 INFO L87 Difference]: Start difference. First operand 1164 states and 1413 transitions. Second operand 7 states. [2020-09-25 12:26:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:50,349 INFO L93 Difference]: Finished difference Result 2983 states and 3766 transitions. [2020-09-25 12:26:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:50,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-09-25 12:26:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:50,360 INFO L225 Difference]: With dead ends: 2983 [2020-09-25 12:26:50,360 INFO L226 Difference]: Without dead ends: 1834 [2020-09-25 12:26:50,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2020-09-25 12:26:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1788. [2020-09-25 12:26:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2020-09-25 12:26:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2190 transitions. [2020-09-25 12:26:50,429 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2190 transitions. Word has length 273 [2020-09-25 12:26:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:50,429 INFO L479 AbstractCegarLoop]: Abstraction has 1788 states and 2190 transitions. [2020-09-25 12:26:50,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2190 transitions. [2020-09-25 12:26:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-25 12:26:50,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:50,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:50,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:50,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:50,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:50,439 INFO L82 PathProgramCache]: Analyzing trace with hash 463482390, now seen corresponding path program 1 times [2020-09-25 12:26:50,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:50,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340960985] [2020-09-25 12:26:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking...