/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:01,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:01,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:01,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:01,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:01,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:01,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:01,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:01,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:01,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:01,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:01,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:01,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:01,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:01,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:01,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:01,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:01,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:01,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:01,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:01,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:01,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:01,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:01,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:01,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:01,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:01,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:01,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:01,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:01,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:01,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:01,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:01,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:01,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:01,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:01,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:01,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:01,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:01,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:01,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:01,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:01,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:29:01,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:01,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:01,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:01,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:01,641 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:01,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:01,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:01,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:01,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:01,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:01,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:01,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:01,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:01,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:01,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:01,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:01,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:01,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:01,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:01,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:01,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:01,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:01,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:01,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:01,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:01,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:01,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:01,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:01,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:01,648 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:02,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:02,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:02,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:02,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:02,113 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:02,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-24 19:29:02,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98f9081e/cbde6b3c3a55473e90dfe80eb8975777/FLAGf2beab4ac [2020-09-24 19:29:02,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:29:02,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-24 19:29:02,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98f9081e/cbde6b3c3a55473e90dfe80eb8975777/FLAGf2beab4ac [2020-09-24 19:29:03,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98f9081e/cbde6b3c3a55473e90dfe80eb8975777 [2020-09-24 19:29:03,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:29:03,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:29:03,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:03,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:29:03,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:29:03,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:03,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03, skipping insertion in model container [2020-09-24 19:29:03,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:03,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:29:03,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:29:03,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:03,667 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:29:03,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:03,940 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:29:03,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03 WrapperNode [2020-09-24 19:29:03,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:03,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:29:03,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:29:03,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:29:03,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:03,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:03,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:03,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:04,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:04,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:04,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... [2020-09-24 19:29:04,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:29:04,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:29:04,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:29:04,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:29:04,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:29:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:29:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:29:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:29:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:29:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:29:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:29:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:29:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:29:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:29:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:29:05,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:29:05,810 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:29:05,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:05 BoogieIcfgContainer [2020-09-24 19:29:05,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:29:05,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:29:05,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:29:05,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:29:05,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:29:03" (1/3) ... [2020-09-24 19:29:05,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:05, skipping insertion in model container [2020-09-24 19:29:05,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:03" (2/3) ... [2020-09-24 19:29:05,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:05, skipping insertion in model container [2020-09-24 19:29:05,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:05" (3/3) ... [2020-09-24 19:29:05,829 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-24 19:29:05,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:29:05,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:29:05,876 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:29:05,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:29:05,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:29:05,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:29:05,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:29:05,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:29:05,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:29:05,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:29:05,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:29:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:29:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 19:29:05,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:05,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:05,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-24 19:29:05,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:05,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-24 19:29:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:29:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:29:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:29:07,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:29:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:07,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:07,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:29:07,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:07,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-24 19:29:07,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:07,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:29:07,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616193041] [2020-09-24 19:29:07,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:07,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:07,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:07,469 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 19:29:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:10,190 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-24 19:29:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:29:10,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-24 19:29:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:10,220 INFO L225 Difference]: With dead ends: 1226 [2020-09-24 19:29:10,220 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 19:29:10,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 19:29:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-24 19:29:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 19:29:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-24 19:29:10,365 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 74 [2020-09-24 19:29:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:10,368 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-24 19:29:10,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-24 19:29:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 19:29:10,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:10,384 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, 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] [2020-09-24 19:29:10,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:29:10,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash -52326592, now seen corresponding path program 1 times [2020-09-24 19:29:10,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:10,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314858469] [2020-09-24 19:29:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-24 19:29:11,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:11,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:29:11,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:29:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 19:29:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:11,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:11,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:29:11,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:29:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-24 19:29:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:29:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:12,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314858469] [2020-09-24 19:29:12,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:12,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:29:12,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631632383] [2020-09-24 19:29:12,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:12,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:12,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:12,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:12,158 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-24 19:29:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:16,751 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-24 19:29:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:29:16,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-24 19:29:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:16,764 INFO L225 Difference]: With dead ends: 1574 [2020-09-24 19:29:16,764 INFO L226 Difference]: Without dead ends: 894 [2020-09-24 19:29:16,767 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 [2020-09-24 19:29:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-24 19:29:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-24 19:29:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-24 19:29:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-24 19:29:16,843 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 203 [2020-09-24 19:29:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:16,844 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-24 19:29:16,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-24 19:29:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 19:29:16,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:16,850 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, 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] [2020-09-24 19:29:16,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:16,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash 629926734, now seen corresponding path program 1 times [2020-09-24 19:29:16,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:16,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173338452] [2020-09-24 19:29:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-24 19:29:17,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-24 19:29:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:17,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 19:29:17,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:18,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:18,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:18,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:29:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:18,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:18,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-24 19:29:18,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:18,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173338452] [2020-09-24 19:29:18,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:18,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:29:18,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071316022] [2020-09-24 19:29:18,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:18,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:18,721 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 7 states. [2020-09-24 19:29:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:20,972 INFO L93 Difference]: Finished difference Result 1858 states and 2520 transitions. [2020-09-24 19:29:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:20,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-24 19:29:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:20,982 INFO L225 Difference]: With dead ends: 1858 [2020-09-24 19:29:20,982 INFO L226 Difference]: Without dead ends: 1021 [2020-09-24 19:29:20,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-09-24 19:29:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 855. [2020-09-24 19:29:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-09-24 19:29:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1095 transitions. [2020-09-24 19:29:21,038 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1095 transitions. Word has length 210 [2020-09-24 19:29:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:21,039 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1095 transitions. [2020-09-24 19:29:21,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1095 transitions. [2020-09-24 19:29:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-24 19:29:21,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:21,046 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:21,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:21,047 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:21,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1709165424, now seen corresponding path program 1 times [2020-09-24 19:29:21,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:21,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093078579] [2020-09-24 19:29:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-09-24 19:29:22,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-24 19:29:22,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 19:29:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:22,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:22,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:29:22,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:22,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 19:29:22,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-24 19:29:22,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:29:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:23,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093078579] [2020-09-24 19:29:23,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:23,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:29:23,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769903466] [2020-09-24 19:29:23,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:29:23,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:23,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:29:23,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:23,017 INFO L87 Difference]: Start difference. First operand 855 states and 1095 transitions. Second operand 8 states. [2020-09-24 19:29:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:25,150 INFO L93 Difference]: Finished difference Result 2067 states and 2865 transitions. [2020-09-24 19:29:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:25,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 282 [2020-09-24 19:29:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:25,163 INFO L225 Difference]: With dead ends: 2067 [2020-09-24 19:29:25,164 INFO L226 Difference]: Without dead ends: 1377 [2020-09-24 19:29:25,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:29:25,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-09-24 19:29:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1173. [2020-09-24 19:29:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-09-24 19:29:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1524 transitions. [2020-09-24 19:29:25,222 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1524 transitions. Word has length 282 [2020-09-24 19:29:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:25,223 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1524 transitions. [2020-09-24 19:29:25,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1524 transitions. [2020-09-24 19:29:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-09-24 19:29:25,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:25,234 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:25,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:25,234 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash -98335448, now seen corresponding path program 1 times [2020-09-24 19:29:25,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:25,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595443675] [2020-09-24 19:29:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-09-24 19:29:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-24 19:29:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 19:29:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:29:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:29:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:26,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-24 19:29:26,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:26,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:27,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595443675] [2020-09-24 19:29:27,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:27,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:27,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692509828] [2020-09-24 19:29:27,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:27,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:27,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:27,412 INFO L87 Difference]: Start difference. First operand 1173 states and 1524 transitions. Second operand 7 states. [2020-09-24 19:29:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:29,618 INFO L93 Difference]: Finished difference Result 2367 states and 3157 transitions. [2020-09-24 19:29:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:29,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-09-24 19:29:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:29,624 INFO L225 Difference]: With dead ends: 2367 [2020-09-24 19:29:29,625 INFO L226 Difference]: Without dead ends: 1011 [2020-09-24 19:29:29,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-24 19:29:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 985. [2020-09-24 19:29:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 19:29:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1208 transitions. [2020-09-24 19:29:29,658 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1208 transitions. Word has length 298 [2020-09-24 19:29:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:29,658 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1208 transitions. [2020-09-24 19:29:29,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1208 transitions. [2020-09-24 19:29:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-09-24 19:29:29,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:29,666 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:29,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:29,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:29,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1687067232, now seen corresponding path program 1 times [2020-09-24 19:29:29,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:29,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598344309] [2020-09-24 19:29:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-09-24 19:29:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:29:30,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-24 19:29:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:30,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:30,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 19:29:30,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 19:29:30,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:29:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 19:29:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:31,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:31,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 19:29:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:31,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598344309] [2020-09-24 19:29:31,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:31,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:31,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846309882] [2020-09-24 19:29:31,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:31,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:31,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:31,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:31,469 INFO L87 Difference]: Start difference. First operand 985 states and 1208 transitions. Second operand 7 states. [2020-09-24 19:29:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:33,742 INFO L93 Difference]: Finished difference Result 2161 states and 2723 transitions. [2020-09-24 19:29:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:33,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-09-24 19:29:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:33,750 INFO L225 Difference]: With dead ends: 2161 [2020-09-24 19:29:33,750 INFO L226 Difference]: Without dead ends: 1341 [2020-09-24 19:29:33,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-24 19:29:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1301. [2020-09-24 19:29:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-24 19:29:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1562 transitions. [2020-09-24 19:29:33,789 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1562 transitions. Word has length 300 [2020-09-24 19:29:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:33,789 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1562 transitions. [2020-09-24 19:29:33,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1562 transitions. [2020-09-24 19:29:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-24 19:29:33,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:33,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:29:33,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:33,795 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:33,796 INFO L82 PathProgramCache]: Analyzing trace with hash -258075235, now seen corresponding path program 1 times [2020-09-24 19:29:33,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:33,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768052964] [2020-09-24 19:29:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-09-24 19:29:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:29:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-24 19:29:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:29:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:35,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:29:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:35,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:35,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:29:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:29:35,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:29:35,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-24 19:29:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:35,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:35,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:35,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 19:29:35,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 320 proven. 71 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 19:29:35,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768052964] [2020-09-24 19:29:35,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:35,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:29:35,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909067127] [2020-09-24 19:29:35,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:29:35,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:35,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:29:35,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:29:35,780 INFO L87 Difference]: Start difference. First operand 1301 states and 1562 transitions. Second operand 9 states. [2020-09-24 19:29:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:38,999 INFO L93 Difference]: Finished difference Result 2781 states and 3417 transitions. [2020-09-24 19:29:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:29:39,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 368 [2020-09-24 19:29:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:39,014 INFO L225 Difference]: With dead ends: 2781 [2020-09-24 19:29:39,015 INFO L226 Difference]: Without dead ends: 1645 [2020-09-24 19:29:39,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:29:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-09-24 19:29:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1457. [2020-09-24 19:29:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-09-24 19:29:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1662 transitions. [2020-09-24 19:29:39,058 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1662 transitions. Word has length 368 [2020-09-24 19:29:39,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:39,059 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 1662 transitions. [2020-09-24 19:29:39,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:29:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1662 transitions. [2020-09-24 19:29:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-09-24 19:29:39,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:39,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 19:29:39,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:39,066 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:39,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1480312016, now seen corresponding path program 1 times [2020-09-24 19:29:39,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:39,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504382548] [2020-09-24 19:29:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-09-24 19:29:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-09-24 19:29:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 19:29:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:40,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:40,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:40,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:29:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:40,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:40,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:40,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:29:40,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 19:29:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:40,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 19:29:40,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:29:41,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504382548] [2020-09-24 19:29:41,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:41,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:41,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232274141] [2020-09-24 19:29:41,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:41,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:41,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:41,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:41,158 INFO L87 Difference]: Start difference. First operand 1457 states and 1662 transitions. Second operand 7 states. [2020-09-24 19:29:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:44,048 INFO L93 Difference]: Finished difference Result 3583 states and 4220 transitions. [2020-09-24 19:29:44,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:44,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-09-24 19:29:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:44,062 INFO L225 Difference]: With dead ends: 3583 [2020-09-24 19:29:44,062 INFO L226 Difference]: Without dead ends: 2291 [2020-09-24 19:29:44,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-09-24 19:29:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2238. [2020-09-24 19:29:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2020-09-24 19:29:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 2542 transitions. [2020-09-24 19:29:44,119 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 2542 transitions. Word has length 413 [2020-09-24 19:29:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:44,120 INFO L479 AbstractCegarLoop]: Abstraction has 2238 states and 2542 transitions. [2020-09-24 19:29:44,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 2542 transitions. [2020-09-24 19:29:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-09-24 19:29:44,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:44,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:44,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:44,129 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:44,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:44,129 INFO L82 PathProgramCache]: Analyzing trace with hash 969346024, now seen corresponding path program 1 times [2020-09-24 19:29:44,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:44,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772270909] [2020-09-24 19:29:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-09-24 19:29:45,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-09-24 19:29:45,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-09-24 19:29:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:45,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:45,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:45,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:29:45,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:45,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:29:45,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-09-24 19:29:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:29:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:29:46,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772270909] [2020-09-24 19:29:46,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:46,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:46,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020233518] [2020-09-24 19:29:46,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:46,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:46,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:46,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:46,129 INFO L87 Difference]: Start difference. First operand 2238 states and 2542 transitions. Second operand 7 states. [2020-09-24 19:29:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:50,971 INFO L93 Difference]: Finished difference Result 4788 states and 5477 transitions. [2020-09-24 19:29:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:50,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-09-24 19:29:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:50,982 INFO L225 Difference]: With dead ends: 4788 [2020-09-24 19:29:50,982 INFO L226 Difference]: Without dead ends: 2715 [2020-09-24 19:29:50,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2020-09-24 19:29:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2694. [2020-09-24 19:29:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2020-09-24 19:29:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3044 transitions. [2020-09-24 19:29:51,050 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3044 transitions. Word has length 413 [2020-09-24 19:29:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:51,051 INFO L479 AbstractCegarLoop]: Abstraction has 2694 states and 3044 transitions. [2020-09-24 19:29:51,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3044 transitions. [2020-09-24 19:29:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 19:29:51,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:51,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:51,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:51,062 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1431572518, now seen corresponding path program 1 times [2020-09-24 19:29:51,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:51,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844703886] [2020-09-24 19:29:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-09-24 19:29:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-09-24 19:29:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-24 19:29:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 19:29:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:52,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:52,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:52,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:52,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:52,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:52,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:52,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:52,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 19:29:52,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:29:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:53,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:53,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:53,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:53,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 19:29:53,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:53,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:29:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-24 19:29:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:53,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:53,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:29:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-24 19:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 274 proven. 86 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-09-24 19:29:53,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844703886] [2020-09-24 19:29:53,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:53,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:29:53,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324486503] [2020-09-24 19:29:53,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:29:53,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:53,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:29:53,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:29:53,597 INFO L87 Difference]: Start difference. First operand 2694 states and 3044 transitions. Second operand 9 states.