/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=0.8 --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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:21,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:21,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:21,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:21,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:21,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:21,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:21,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:21,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:21,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:21,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:21,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:21,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:21,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:21,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:21,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:21,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:21,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:21,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:21,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:21,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:21,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:21,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:21,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:21,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:21,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:21,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:21,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:21,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:21,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:21,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:21,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:21,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:21,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:21,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:21,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:21,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:21,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:21,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:21,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:21,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:21,412 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 07:56:21,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:21,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:21,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:21,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:21,466 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:21,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:21,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:21,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:21,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:21,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:21,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:21,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:21,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:21,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:21,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:21,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:21,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:21,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:21,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:21,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:21,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:21,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:21,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:21,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:21,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:21,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:21,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:21,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:21,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:21,475 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:56:21,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:21,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:21,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:21,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:21,968 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:21,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 07:56:22,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bd02bd34/6de95e1e8b864fb59b83d2572ee30a4e/FLAGdcfa0e9ac [2020-09-25 07:56:22,722 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:22,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 07:56:22,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bd02bd34/6de95e1e8b864fb59b83d2572ee30a4e/FLAGdcfa0e9ac [2020-09-25 07:56:22,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bd02bd34/6de95e1e8b864fb59b83d2572ee30a4e [2020-09-25 07:56:22,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:22,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:22,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:22,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:22,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:22,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:22" (1/1) ... [2020-09-25 07:56:22,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:22, skipping insertion in model container [2020-09-25 07:56:22,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:22" (1/1) ... [2020-09-25 07:56:22,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:23,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:23,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:23,498 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:23,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:23,787 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:23,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23 WrapperNode [2020-09-25 07:56:23,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:23,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:23,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:23,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:23,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (1/1) ... [2020-09-25 07:56:23,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:23,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:23,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:23,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:23,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (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 07:56:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:25,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:25,553 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:25,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:25 BoogieIcfgContainer [2020-09-25 07:56:25,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:25,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:25,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:25,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:25,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:22" (1/3) ... [2020-09-25 07:56:25,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888107c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:25, skipping insertion in model container [2020-09-25 07:56:25,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:23" (2/3) ... [2020-09-25 07:56:25,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888107c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:25, skipping insertion in model container [2020-09-25 07:56:25,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:25" (3/3) ... [2020-09-25 07:56:25,573 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 07:56:25,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:25,597 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:25,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:25,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:25,658 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:25,658 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:25,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:25,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:25,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:25,659 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:25,659 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 07:56:25,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:25,708 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] [2020-09-25 07:56:25,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 07:56:25,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:25,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915691290] [2020-09-25 07:56:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 07:56:26,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-09-25 07:56:26,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:26,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:56:26,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:56:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:27,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:27,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:27,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:56:27,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:27,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:56:27,075 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 07:56:27,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915691290] [2020-09-25 07:56:27,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:27,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:27,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250668296] [2020-09-25 07:56:27,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:27,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:27,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:27,125 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:29,352 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:56:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:29,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 07:56:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:29,404 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:56:29,404 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:56:29,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:56:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:56:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:56:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:56:29,511 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-25 07:56:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:29,512 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:56:29,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:56:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:56:29,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:29,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:29,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:29,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:29,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 07:56:29,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:29,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821897021] [2020-09-25 07:56:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 07:56:34,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 07:56:34,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:56:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:56:34,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:34,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821897021] [2020-09-25 07:56:34,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:34,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:34,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391470809] [2020-09-25 07:56:34,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:34,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:34,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:34,998 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:56:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:36,798 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 07:56:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:36,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 07:56:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:36,806 INFO L225 Difference]: With dead ends: 698 [2020-09-25 07:56:36,806 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 07:56:36,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 07:56:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 07:56:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 07:56:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 07:56:36,875 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 132 [2020-09-25 07:56:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:36,876 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 07:56:36,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 07:56:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 07:56:36,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:36,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:36,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:36,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:36,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:36,884 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 07:56:36,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:36,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53547737] [2020-09-25 07:56:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:39,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 07:56:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2981 [2020-09-25 07:56:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:39,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:56:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:56:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:56:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:39,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:40,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:40,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 07:56:40,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:40,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:56:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:40,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53547737] [2020-09-25 07:56:40,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:40,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:40,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121946352] [2020-09-25 07:56:40,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:40,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:40,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:40,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:40,179 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 5 states. [2020-09-25 07:56:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:42,257 INFO L93 Difference]: Finished difference Result 1700 states and 2254 transitions. [2020-09-25 07:56:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:42,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 07:56:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:42,266 INFO L225 Difference]: With dead ends: 1700 [2020-09-25 07:56:42,266 INFO L226 Difference]: Without dead ends: 1170 [2020-09-25 07:56:42,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-25 07:56:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1150. [2020-09-25 07:56:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-09-25 07:56:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1437 transitions. [2020-09-25 07:56:42,310 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1437 transitions. Word has length 142 [2020-09-25 07:56:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:42,311 INFO L479 AbstractCegarLoop]: Abstraction has 1150 states and 1437 transitions. [2020-09-25 07:56:42,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1437 transitions. [2020-09-25 07:56:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:56:42,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:42,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:42,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:42,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash -463375426, now seen corresponding path program 1 times [2020-09-25 07:56:42,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:42,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735578518] [2020-09-25 07:56:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:46,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 07:56:46,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4605 [2020-09-25 07:56:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:46,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:56:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 07:56:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:56:47,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:47,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:56:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 07:56:47,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 07:56:47,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:56:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:47,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735578518] [2020-09-25 07:56:47,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:47,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:47,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334264157] [2020-09-25 07:56:47,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:47,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:47,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:47,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:47,498 INFO L87 Difference]: Start difference. First operand 1150 states and 1437 transitions. Second operand 8 states. [2020-09-25 07:56:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:50,136 INFO L93 Difference]: Finished difference Result 2700 states and 3525 transitions. [2020-09-25 07:56:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:56:50,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 161 [2020-09-25 07:56:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:50,148 INFO L225 Difference]: With dead ends: 2700 [2020-09-25 07:56:50,148 INFO L226 Difference]: Without dead ends: 1866 [2020-09-25 07:56:50,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:56:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2020-09-25 07:56:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1640. [2020-09-25 07:56:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-09-25 07:56:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2076 transitions. [2020-09-25 07:56:50,209 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2076 transitions. Word has length 161 [2020-09-25 07:56:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:50,209 INFO L479 AbstractCegarLoop]: Abstraction has 1640 states and 2076 transitions. [2020-09-25 07:56:50,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2076 transitions. [2020-09-25 07:56:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:56:50,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:50,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:50,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:50,214 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash 453033902, now seen corresponding path program 1 times [2020-09-25 07:56:50,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:50,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781733871] [2020-09-25 07:56:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:56:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:56:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 07:56:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:56:55,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 07:56:55,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 07:56:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:56:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:55,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781733871] [2020-09-25 07:56:55,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:55,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:56:55,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269643375] [2020-09-25 07:56:55,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:55,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:55,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:55,986 INFO L87 Difference]: Start difference. First operand 1640 states and 2076 transitions. Second operand 8 states. [2020-09-25 07:56:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:59,652 INFO L93 Difference]: Finished difference Result 3944 states and 5419 transitions. [2020-09-25 07:56:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:59,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-09-25 07:56:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:59,668 INFO L225 Difference]: With dead ends: 3944 [2020-09-25 07:56:59,669 INFO L226 Difference]: Without dead ends: 2469 [2020-09-25 07:56:59,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:56:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-25 07:56:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2261. [2020-09-25 07:56:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2020-09-25 07:56:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3013 transitions. [2020-09-25 07:56:59,772 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3013 transitions. Word has length 175 [2020-09-25 07:56:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:59,772 INFO L479 AbstractCegarLoop]: Abstraction has 2261 states and 3013 transitions. [2020-09-25 07:56:59,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3013 transitions. [2020-09-25 07:56:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 07:56:59,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:59,780 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, 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] [2020-09-25 07:56:59,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:59,780 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1015798065, now seen corresponding path program 1 times [2020-09-25 07:56:59,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:59,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239840368] [2020-09-25 07:56:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:04,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 07:57:04,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:57:04,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:04,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 07:57:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:04,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:04,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:57:04,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:04,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:04,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:05,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:05,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:05,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:57:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:05,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:05,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 07:57:05,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 07:57:05,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:05,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:57:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239840368] [2020-09-25 07:57:05,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:05,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:05,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856038161] [2020-09-25 07:57:05,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:05,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:05,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:05,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:05,528 INFO L87 Difference]: Start difference. First operand 2261 states and 3013 transitions. Second operand 8 states.