/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:54:08,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:54:08,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:54:08,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:54:08,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:54:08,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:54:08,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:54:08,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:54:08,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:54:08,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:54:08,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:54:08,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:54:08,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:54:08,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:54:08,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:54:08,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:54:08,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:54:08,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:54:08,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:54:08,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:54:08,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:54:08,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:54:08,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:54:08,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:54:08,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:54:08,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:54:08,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:54:08,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:54:08,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:54:08,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:54:08,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:54:08,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:54:08,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:54:08,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:54:08,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:54:08,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:54:08,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:54:08,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:54:08,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:54:08,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:54:08,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:54:08,358 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 [2020-10-14 03:54:08,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:54:08,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:54:08,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:54:08,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:54:08,399 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:54:08,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:54:08,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:54:08,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:54:08,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:54:08,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:54:08,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:54:08,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:54:08,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:54:08,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:54:08,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:54:08,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:54:08,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:54:08,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:54:08,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:54:08,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:54:08,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:54:08,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:54:08,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:54:08,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:54:08,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:54:08,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:54:08,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:54:08,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:54:08,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:54:08,406 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:54:08,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:54:08,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:54:08,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:54:08,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:54:08,712 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:54:08,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-14 03:54:08,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89cb03769/16cf6b6c9c6f42fdb8c3d1ef91acd8f7/FLAG7c4f3e461 [2020-10-14 03:54:09,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:54:09,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-14 03:54:09,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89cb03769/16cf6b6c9c6f42fdb8c3d1ef91acd8f7/FLAG7c4f3e461 [2020-10-14 03:54:09,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89cb03769/16cf6b6c9c6f42fdb8c3d1ef91acd8f7 [2020-10-14 03:54:09,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:54:09,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:54:09,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:54:09,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:54:09,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:54:09,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:54:09" (1/1) ... [2020-10-14 03:54:09,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38010784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:09, skipping insertion in model container [2020-10-14 03:54:09,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:54:09" (1/1) ... [2020-10-14 03:54:09,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:54:09,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:54:11,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:54:11,215 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:54:11,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:54:11,626 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:54:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11 WrapperNode [2020-10-14 03:54:11,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:54:11,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:54:11,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:54:11,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:54:11,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (1/1) ... [2020-10-14 03:54:11,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:54:11,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:54:11,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:54:11,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:54:11,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (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 [2020-10-14 03:54:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:54:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:54:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:54:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:54:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:54:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:54:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:54:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:54:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:54:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:54:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:54:18,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:54:18,693 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:54:18,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:18 BoogieIcfgContainer [2020-10-14 03:54:18,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:54:18,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:54:18,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:54:18,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:54:18,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:54:09" (1/3) ... [2020-10-14 03:54:18,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ff1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:18, skipping insertion in model container [2020-10-14 03:54:18,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:11" (2/3) ... [2020-10-14 03:54:18,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ff1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:18, skipping insertion in model container [2020-10-14 03:54:18,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:18" (3/3) ... [2020-10-14 03:54:18,714 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label05.c [2020-10-14 03:54:18,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:54:18,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:54:18,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:54:18,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:54:18,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:54:18,785 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:54:18,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:54:18,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:54:18,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:54:18,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:54:18,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:54:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:54:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 03:54:18,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:18,837 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] [2020-10-14 03:54:18,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1186174567, now seen corresponding path program 1 times [2020-10-14 03:54:18,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:18,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842687355] [2020-10-14 03:54:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:19,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:19,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:54:19,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 03:54:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:54:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:54:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:54:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:54:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:19,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:19,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:19,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:19,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 03:54:19,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:19,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:54:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:19,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842687355] [2020-10-14 03:54:19,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:54:19,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:54:19,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905542591] [2020-10-14 03:54:19,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:54:19,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:19,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:54:19,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:54:19,794 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:54:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:29,755 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 03:54:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:54:29,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 03:54:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:29,783 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 03:54:29,784 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 03:54:29,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 03:54:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 03:54:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 03:54:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 03:54:29,917 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 67 [2020-10-14 03:54:29,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:29,918 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 03:54:29,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:54:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 03:54:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 03:54:29,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:29,925 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:54:29,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:54:29,926 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:29,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:29,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1939939023, now seen corresponding path program 1 times [2020-10-14 03:54:29,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:29,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807190160] [2020-10-14 03:54:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 03:54:32,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:54:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2180 [2020-10-14 03:54:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:32,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:54:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:54:32,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:54:32,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:32,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:32,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:54:32,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:32,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:54:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:54:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:54:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:54:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:32,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:54:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:32,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807190160] [2020-10-14 03:54:32,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:32,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:54:32,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741079455] [2020-10-14 03:54:32,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:54:32,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:32,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:54:32,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:32,493 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 03:54:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:44,438 INFO L93 Difference]: Finished difference Result 2920 states and 4544 transitions. [2020-10-14 03:54:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:54:44,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 03:54:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:44,451 INFO L225 Difference]: With dead ends: 2920 [2020-10-14 03:54:44,452 INFO L226 Difference]: Without dead ends: 1924 [2020-10-14 03:54:44,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:54:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-10-14 03:54:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1897. [2020-10-14 03:54:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-10-14 03:54:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2704 transitions. [2020-10-14 03:54:44,521 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2704 transitions. Word has length 138 [2020-10-14 03:54:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:44,522 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 2704 transitions. [2020-10-14 03:54:44,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:54:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2704 transitions. [2020-10-14 03:54:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 03:54:44,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:44,526 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, 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] [2020-10-14 03:54:44,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:54:44,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:44,527 INFO L82 PathProgramCache]: Analyzing trace with hash -874447903, now seen corresponding path program 1 times [2020-10-14 03:54:44,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:44,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351549795] [2020-10-14 03:54:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:48,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:48,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 03:54:48,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:54:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4041 [2020-10-14 03:54:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:48,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:54:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:54:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:54:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:48,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:48,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:48,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:54:48,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:48,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:54:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:54:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:48,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:54:48,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:54:48,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:48,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:54:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:48,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351549795] [2020-10-14 03:54:48,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:48,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:54:48,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228328362] [2020-10-14 03:54:48,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:54:48,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:54:48,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:48,906 INFO L87 Difference]: Start difference. First operand 1897 states and 2704 transitions. Second operand 5 states. [2020-10-14 03:55:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:00,963 INFO L93 Difference]: Finished difference Result 4688 states and 6906 transitions. [2020-10-14 03:55:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:00,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 03:55:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:00,983 INFO L225 Difference]: With dead ends: 4688 [2020-10-14 03:55:00,983 INFO L226 Difference]: Without dead ends: 2797 [2020-10-14 03:55:00,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2020-10-14 03:55:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2791. [2020-10-14 03:55:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-14 03:55:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3820 transitions. [2020-10-14 03:55:01,076 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3820 transitions. Word has length 141 [2020-10-14 03:55:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:01,077 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3820 transitions. [2020-10-14 03:55:01,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3820 transitions. [2020-10-14 03:55:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 03:55:01,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:01,081 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, 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] [2020-10-14 03:55:01,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:55:01,082 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash -178148699, now seen corresponding path program 1 times [2020-10-14 03:55:01,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:01,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493080782] [2020-10-14 03:55:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:03,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:03,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 03:55:03,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:55:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2237 [2020-10-14 03:55:03,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:03,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:55:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:55:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:03,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:55:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:03,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:03,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:55:03,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:55:03,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:03,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:55:03,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:03,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493080782] [2020-10-14 03:55:03,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:03,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:03,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928973827] [2020-10-14 03:55:03,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:03,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:03,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:03,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:03,680 INFO L87 Difference]: Start difference. First operand 2791 states and 3820 transitions. Second operand 5 states. [2020-10-14 03:55:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:25,477 INFO L93 Difference]: Finished difference Result 7833 states and 10841 transitions. [2020-10-14 03:55:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:25,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 03:55:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:25,513 INFO L225 Difference]: With dead ends: 7833 [2020-10-14 03:55:25,513 INFO L226 Difference]: Without dead ends: 5048 [2020-10-14 03:55:25,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-10-14 03:55:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5003. [2020-10-14 03:55:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-14 03:55:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6802 transitions. [2020-10-14 03:55:25,693 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6802 transitions. Word has length 143 [2020-10-14 03:55:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:25,693 INFO L479 AbstractCegarLoop]: Abstraction has 5003 states and 6802 transitions. [2020-10-14 03:55:25,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6802 transitions. [2020-10-14 03:55:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 03:55:25,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:25,701 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, 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] [2020-10-14 03:55:25,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:55:25,702 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:25,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1149532705, now seen corresponding path program 1 times [2020-10-14 03:55:25,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:25,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523571373] [2020-10-14 03:55:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 03:55:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:55:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1446 [2020-10-14 03:55:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:27,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:55:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:55:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:27,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:27,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:27,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:55:27,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:27,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:27,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:27,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:55:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 03:55:27,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:27,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:55:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:55:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:27,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523571373] [2020-10-14 03:55:27,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:27,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:27,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868142473] [2020-10-14 03:55:27,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:27,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:27,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:27,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:27,485 INFO L87 Difference]: Start difference. First operand 5003 states and 6802 transitions. Second operand 5 states. [2020-10-14 03:55:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:41,095 INFO L93 Difference]: Finished difference Result 11793 states and 16568 transitions. [2020-10-14 03:55:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:41,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 03:55:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:41,137 INFO L225 Difference]: With dead ends: 11793 [2020-10-14 03:55:41,138 INFO L226 Difference]: Without dead ends: 6796 [2020-10-14 03:55:41,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6796 states. [2020-10-14 03:55:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6796 to 6782. [2020-10-14 03:55:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6782 states. [2020-10-14 03:55:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6782 states to 6782 states and 9201 transitions. [2020-10-14 03:55:41,342 INFO L78 Accepts]: Start accepts. Automaton has 6782 states and 9201 transitions. Word has length 146 [2020-10-14 03:55:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:41,343 INFO L479 AbstractCegarLoop]: Abstraction has 6782 states and 9201 transitions. [2020-10-14 03:55:41,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6782 states and 9201 transitions. [2020-10-14 03:55:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 03:55:41,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:41,347 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, 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] [2020-10-14 03:55:41,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:55:41,347 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:41,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1947333032, now seen corresponding path program 1 times [2020-10-14 03:55:41,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:41,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178608068] [2020-10-14 03:55:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:42,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:42,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 03:55:42,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:55:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-14 03:55:42,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:42,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:55:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:55:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:42,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:42,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:55:42,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:42,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:42,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:42,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:42,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:55:42,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:55:42,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:42,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:55:42,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:42,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178608068] [2020-10-14 03:55:42,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:42,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:42,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096987078] [2020-10-14 03:55:42,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:42,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:42,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:42,703 INFO L87 Difference]: Start difference. First operand 6782 states and 9201 transitions. Second operand 5 states. [2020-10-14 03:55:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:55,017 INFO L93 Difference]: Finished difference Result 15314 states and 21353 transitions. [2020-10-14 03:55:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:55,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-14 03:55:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:55,064 INFO L225 Difference]: With dead ends: 15314 [2020-10-14 03:55:55,064 INFO L226 Difference]: Without dead ends: 8538 [2020-10-14 03:55:55,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2020-10-14 03:55:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 8528. [2020-10-14 03:55:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8528 states. [2020-10-14 03:55:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8528 states to 8528 states and 11566 transitions. [2020-10-14 03:55:55,340 INFO L78 Accepts]: Start accepts. Automaton has 8528 states and 11566 transitions. Word has length 157 [2020-10-14 03:55:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:55,341 INFO L479 AbstractCegarLoop]: Abstraction has 8528 states and 11566 transitions. [2020-10-14 03:55:55,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:55,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8528 states and 11566 transitions. [2020-10-14 03:55:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 03:55:55,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:55,347 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, 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] [2020-10-14 03:55:55,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:55:55,348 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1741747015, now seen corresponding path program 1 times [2020-10-14 03:55:55,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:55,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575593946] [2020-10-14 03:55:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 03:55:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:55:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-14 03:55:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:56,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 03:55:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:55:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:56,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:55:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:56,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:56,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:56,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:56,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:56,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 03:55:56,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:55:56,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:56,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:56,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:55:56,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:56,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575593946] [2020-10-14 03:55:56,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:56,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:55:56,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660048864] [2020-10-14 03:55:56,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:55:56,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:56,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:55:56,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:56,741 INFO L87 Difference]: Start difference. First operand 8528 states and 11566 transitions. Second operand 6 states. [2020-10-14 03:56:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:14,591 INFO L93 Difference]: Finished difference Result 24049 states and 33158 transitions. [2020-10-14 03:56:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:14,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-10-14 03:56:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:14,677 INFO L225 Difference]: With dead ends: 24049 [2020-10-14 03:56:14,677 INFO L226 Difference]: Without dead ends: 15527 [2020-10-14 03:56:14,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2020-10-14 03:56:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12057. [2020-10-14 03:56:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12057 states. [2020-10-14 03:56:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12057 states to 12057 states and 16811 transitions. [2020-10-14 03:56:15,132 INFO L78 Accepts]: Start accepts. Automaton has 12057 states and 16811 transitions. Word has length 169 [2020-10-14 03:56:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:15,133 INFO L479 AbstractCegarLoop]: Abstraction has 12057 states and 16811 transitions. [2020-10-14 03:56:15,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:56:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 12057 states and 16811 transitions. [2020-10-14 03:56:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 03:56:15,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:15,138 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, 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] [2020-10-14 03:56:15,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:56:15,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:15,139 INFO L82 PathProgramCache]: Analyzing trace with hash 972906550, now seen corresponding path program 1 times [2020-10-14 03:56:15,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:15,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532671512] [2020-10-14 03:56:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:18,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:18,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 03:56:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:56:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3206 [2020-10-14 03:56:18,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:18,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:56:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:56:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:18,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:18,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:56:18,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:18,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:18,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:18,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:56:18,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:56:18,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:18,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 03:56:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:56:18,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532671512] [2020-10-14 03:56:18,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:18,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:56:18,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146387266] [2020-10-14 03:56:18,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:56:18,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:18,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:56:18,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:18,975 INFO L87 Difference]: Start difference. First operand 12057 states and 16811 transitions. Second operand 5 states. [2020-10-14 03:56:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:36,262 INFO L93 Difference]: Finished difference Result 34271 states and 47842 transitions. [2020-10-14 03:56:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:36,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 03:56:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:36,370 INFO L225 Difference]: With dead ends: 34271 [2020-10-14 03:56:36,370 INFO L226 Difference]: Without dead ends: 22220 [2020-10-14 03:56:36,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22220 states. [2020-10-14 03:56:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22220 to 21731. [2020-10-14 03:56:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21731 states. [2020-10-14 03:56:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21731 states to 21731 states and 29849 transitions. [2020-10-14 03:56:36,910 INFO L78 Accepts]: Start accepts. Automaton has 21731 states and 29849 transitions. Word has length 170 [2020-10-14 03:56:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:36,911 INFO L479 AbstractCegarLoop]: Abstraction has 21731 states and 29849 transitions. [2020-10-14 03:56:36,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:56:36,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21731 states and 29849 transitions. [2020-10-14 03:56:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 03:56:36,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:36,924 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, 3, 3, 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] [2020-10-14 03:56:36,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:56:36,924 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:36,925 INFO L82 PathProgramCache]: Analyzing trace with hash 815320929, now seen corresponding path program 1 times [2020-10-14 03:56:36,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:36,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268259455] [2020-10-14 03:56:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:41,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:41,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 03:56:41,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:56:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 03:56:41,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:41,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:56:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:56:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:42,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:42,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:56:42,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:42,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:42,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:42,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:42,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:42,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:42,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:42,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:56:42,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 03:56:42,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:42,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:56:42,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:56:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 03:56:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:56:42,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 03:56:42,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:42,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:56:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:56:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:56:42,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268259455] [2020-10-14 03:56:42,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:42,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:42,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678950083] [2020-10-14 03:56:42,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:42,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:42,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:42,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:42,603 INFO L87 Difference]: Start difference. First operand 21731 states and 29849 transitions. Second operand 7 states. [2020-10-14 03:57:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:03,160 INFO L93 Difference]: Finished difference Result 40967 states and 57263 transitions. [2020-10-14 03:57:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:57:03,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 03:57:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:03,192 INFO L225 Difference]: With dead ends: 40967 [2020-10-14 03:57:03,192 INFO L226 Difference]: Without dead ends: 11318 [2020-10-14 03:57:03,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:57:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2020-10-14 03:57:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 10395. [2020-10-14 03:57:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10395 states. [2020-10-14 03:57:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10395 states to 10395 states and 13152 transitions. [2020-10-14 03:57:03,478 INFO L78 Accepts]: Start accepts. Automaton has 10395 states and 13152 transitions. Word has length 213 [2020-10-14 03:57:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:03,479 INFO L479 AbstractCegarLoop]: Abstraction has 10395 states and 13152 transitions. [2020-10-14 03:57:03,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 10395 states and 13152 transitions. [2020-10-14 03:57:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 03:57:03,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:03,483 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, 3, 3, 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] [2020-10-14 03:57:03,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:57:03,483 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:03,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1572599359, now seen corresponding path program 1 times [2020-10-14 03:57:03,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:03,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213383537] [2020-10-14 03:57:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:03,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 03:57:07,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4186 [2020-10-14 03:57:07,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:57:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:57:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:57:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:07,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:57:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:08,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:08,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:57:08,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:57:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:08,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:57:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:57:08,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213383537] [2020-10-14 03:57:08,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:08,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:08,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277352956] [2020-10-14 03:57:08,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:08,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:08,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:08,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:08,134 INFO L87 Difference]: Start difference. First operand 10395 states and 13152 transitions. Second operand 5 states. [2020-10-14 03:57:23,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:23,343 INFO L93 Difference]: Finished difference Result 26942 states and 34665 transitions. [2020-10-14 03:57:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:23,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-14 03:57:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:23,392 INFO L225 Difference]: With dead ends: 26942 [2020-10-14 03:57:23,392 INFO L226 Difference]: Without dead ends: 16552 [2020-10-14 03:57:23,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:57:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16552 states. [2020-10-14 03:57:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16552 to 15665. [2020-10-14 03:57:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15665 states. [2020-10-14 03:57:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15665 states to 15665 states and 19213 transitions. [2020-10-14 03:57:23,756 INFO L78 Accepts]: Start accepts. Automaton has 15665 states and 19213 transitions. Word has length 229 [2020-10-14 03:57:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:23,756 INFO L479 AbstractCegarLoop]: Abstraction has 15665 states and 19213 transitions. [2020-10-14 03:57:23,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 15665 states and 19213 transitions. [2020-10-14 03:57:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 03:57:23,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:23,768 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, 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] [2020-10-14 03:57:23,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:57:23,769 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2063934110, now seen corresponding path program 1 times [2020-10-14 03:57:23,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:23,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370734543] [2020-10-14 03:57:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 03:57:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-14 03:57:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:24,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:57:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:57:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:24,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:24,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:24,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:24,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:24,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:57:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:24,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:57:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:57:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 03:57:24,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:24,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:57:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:57:24,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370734543] [2020-10-14 03:57:24,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:24,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:57:24,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750421706] [2020-10-14 03:57:24,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:57:24,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:24,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:57:24,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:57:24,812 INFO L87 Difference]: Start difference. First operand 15665 states and 19213 transitions. Second operand 8 states. [2020-10-14 03:57:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:45,515 INFO L93 Difference]: Finished difference Result 37937 states and 47571 transitions. [2020-10-14 03:57:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:57:45,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2020-10-14 03:57:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:45,578 INFO L225 Difference]: With dead ends: 37937 [2020-10-14 03:57:45,579 INFO L226 Difference]: Without dead ends: 22278 [2020-10-14 03:57:45,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:57:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2020-10-14 03:57:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 21825. [2020-10-14 03:57:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21825 states. [2020-10-14 03:57:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21825 states to 21825 states and 26498 transitions. [2020-10-14 03:57:46,019 INFO L78 Accepts]: Start accepts. Automaton has 21825 states and 26498 transitions. Word has length 246 [2020-10-14 03:57:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:46,020 INFO L479 AbstractCegarLoop]: Abstraction has 21825 states and 26498 transitions. [2020-10-14 03:57:46,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:57:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 21825 states and 26498 transitions. [2020-10-14 03:57:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-14 03:57:46,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:46,031 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, 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, 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] [2020-10-14 03:57:46,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:57:46,032 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:46,032 INFO L82 PathProgramCache]: Analyzing trace with hash -472246234, now seen corresponding path program 1 times [2020-10-14 03:57:46,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:46,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796904078] [2020-10-14 03:57:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 03:57:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:57:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3378 [2020-10-14 03:57:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:49,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-14 03:57:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:57:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:49,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:49,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:49,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:49,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 03:57:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:49,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:49,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:49,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:57:49,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:57:49,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:49,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:57:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:50,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:50,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 03:57:50,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:57:50,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:50,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:57:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:57:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-14 03:57:50,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796904078] [2020-10-14 03:57:50,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:57:50,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:57:50,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284517660] [2020-10-14 03:57:50,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:50,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:50,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:50,378 INFO L87 Difference]: Start difference. First operand 21825 states and 26498 transitions. Second operand 5 states.