/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:07,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:07,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:07,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:07,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:07,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:07,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:07,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:07,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:07,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:07,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:07,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:07,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:07,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:07,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:07,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:07,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:07,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:07,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:07,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:07,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:07,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:07,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:07,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:07,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:07,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:07,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:07,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:07,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:07,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:07,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:07,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:07,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:07,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:07,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:07,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:07,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:07,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:07,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:07,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:07,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:07,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:57:07,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:07,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:07,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:07,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:07,869 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:07,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:07,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:07,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:07,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:07,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:07,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:07,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:07,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:07,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:07,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:07,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:07,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:07,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:07,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:07,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:07,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:07,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:07,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:07,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:07,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:07,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:07,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:07,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:07,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:07,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:08,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:08,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:08,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:08,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:08,344 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:08,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 07:57:08,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa387adbe/089e3c7a4a0c4f16a175b6238d904529/FLAG2d7c9170c [2020-09-25 07:57:09,003 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:09,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 07:57:09,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa387adbe/089e3c7a4a0c4f16a175b6238d904529/FLAG2d7c9170c [2020-09-25 07:57:09,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa387adbe/089e3c7a4a0c4f16a175b6238d904529 [2020-09-25 07:57:09,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:09,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:09,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:09,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:09,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:09,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:09" (1/1) ... [2020-09-25 07:57:09,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:09, skipping insertion in model container [2020-09-25 07:57:09,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:09" (1/1) ... [2020-09-25 07:57:09,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:09,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:09,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:09,812 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:10,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:10,077 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:10,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10 WrapperNode [2020-09-25 07:57:10,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:10,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:10,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:10,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:10,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:10,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:10,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:10,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:10,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:11,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:11,641 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:11,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:11 BoogieIcfgContainer [2020-09-25 07:57:11,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:11,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:11,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:11,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:11,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:09" (1/3) ... [2020-09-25 07:57:11,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:11, skipping insertion in model container [2020-09-25 07:57:11,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10" (2/3) ... [2020-09-25 07:57:11,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:11, skipping insertion in model container [2020-09-25 07:57:11,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:11" (3/3) ... [2020-09-25 07:57:11,660 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 07:57:11,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:11,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:11,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:11,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:11,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:11,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:11,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:11,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:11,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:11,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:11,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 07:57:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:11,797 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] [2020-09-25 07:57:11,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:11,807 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 07:57:11,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:11,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 07:57:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:12,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:57:12,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-09-25 07:57:12,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:12,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:57:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:12,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:12,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:57:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:12,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:13,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 07:57:13,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:13,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:13,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271421065] [2020-09-25 07:57:13,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:13,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:13,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:13,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:13,039 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:15,059 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 07:57:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:15,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 07:57:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:15,094 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 07:57:15,094 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 07:57:15,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:15,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 07:57:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 07:57:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 07:57:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 07:57:15,203 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-25 07:57:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:15,203 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 07:57:15,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 07:57:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 07:57:15,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:15,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:15,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:15,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:15,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 07:57:15,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:15,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712731981] [2020-09-25 07:57:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:20,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 07:57:20,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4787 [2020-09-25 07:57:20,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:20,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:57:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:20,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:20,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:20,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:20,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:20,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:20,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:20,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 07:57:20,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:20,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:20,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712731981] [2020-09-25 07:57:20,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:20,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:20,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533779310] [2020-09-25 07:57:20,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:20,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:20,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:20,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:20,331 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 07:57:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:21,945 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 07:57:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:21,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 07:57:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:21,955 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 07:57:21,955 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 07:57:21,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 07:57:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 07:57:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 07:57:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 07:57:22,035 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 133 [2020-09-25 07:57:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:22,039 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 07:57:22,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 07:57:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 07:57:22,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:22,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:22,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:22,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:22,052 INFO L82 PathProgramCache]: Analyzing trace with hash -27995731, now seen corresponding path program 1 times [2020-09-25 07:57:22,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:22,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418484914] [2020-09-25 07:57:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 07:57:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-09-25 07:57:23,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:23,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:23,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:57:23,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 07:57:23,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:23,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418484914] [2020-09-25 07:57:23,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:23,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:23,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404636164] [2020-09-25 07:57:23,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:23,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:23,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:23,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:23,929 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 7 states. [2020-09-25 07:57:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:25,708 INFO L93 Difference]: Finished difference Result 2467 states and 3377 transitions. [2020-09-25 07:57:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:25,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 07:57:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:25,727 INFO L225 Difference]: With dead ends: 2467 [2020-09-25 07:57:25,727 INFO L226 Difference]: Without dead ends: 1598 [2020-09-25 07:57:25,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-09-25 07:57:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1514. [2020-09-25 07:57:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2020-09-25 07:57:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1880 transitions. [2020-09-25 07:57:25,831 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1880 transitions. Word has length 145 [2020-09-25 07:57:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:25,832 INFO L479 AbstractCegarLoop]: Abstraction has 1514 states and 1880 transitions. [2020-09-25 07:57:25,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1880 transitions. [2020-09-25 07:57:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 07:57:25,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:25,838 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:25,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:25,839 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 07:57:25,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:25,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997436720] [2020-09-25 07:57:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:25,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:30,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:30,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 07:57:30,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 07:57:30,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:30,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:57:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:31,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:31,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:31,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:31,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:31,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 07:57:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:31,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:31,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:31,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:57:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:31,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:31,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997436720] [2020-09-25 07:57:31,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:31,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:31,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773915842] [2020-09-25 07:57:31,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:31,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:31,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:31,471 INFO L87 Difference]: Start difference. First operand 1514 states and 1880 transitions. Second operand 8 states. [2020-09-25 07:57:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:34,874 INFO L93 Difference]: Finished difference Result 4655 states and 6496 transitions. [2020-09-25 07:57:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:34,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-25 07:57:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:34,900 INFO L225 Difference]: With dead ends: 4655 [2020-09-25 07:57:34,900 INFO L226 Difference]: Without dead ends: 3156 [2020-09-25 07:57:34,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:57:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2020-09-25 07:57:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 2945. [2020-09-25 07:57:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2945 states. [2020-09-25 07:57:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 3853 transitions. [2020-09-25 07:57:35,028 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 3853 transitions. Word has length 222 [2020-09-25 07:57:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:35,029 INFO L479 AbstractCegarLoop]: Abstraction has 2945 states and 3853 transitions. [2020-09-25 07:57:35,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 3853 transitions. [2020-09-25 07:57:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 07:57:35,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:35,036 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:35,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:35,036 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:35,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1311681026, now seen corresponding path program 1 times [2020-09-25 07:57:35,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:35,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799261226] [2020-09-25 07:57:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 07:57:40,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 07:57:40,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:40,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:40,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:40,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 07:57:40,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:57:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 07:57:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:40,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799261226] [2020-09-25 07:57:40,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:40,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:40,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124326250] [2020-09-25 07:57:40,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:40,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:40,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:40,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:40,951 INFO L87 Difference]: Start difference. First operand 2945 states and 3853 transitions. Second operand 9 states. [2020-09-25 07:57:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:44,801 INFO L93 Difference]: Finished difference Result 8115 states and 11094 transitions. [2020-09-25 07:57:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 07:57:44,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2020-09-25 07:57:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:44,832 INFO L225 Difference]: With dead ends: 8115 [2020-09-25 07:57:44,832 INFO L226 Difference]: Without dead ends: 5335 [2020-09-25 07:57:44,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:57:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2020-09-25 07:57:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 4508. [2020-09-25 07:57:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4508 states. [2020-09-25 07:57:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 5926 transitions. [2020-09-25 07:57:44,993 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 5926 transitions. Word has length 226 [2020-09-25 07:57:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:44,994 INFO L479 AbstractCegarLoop]: Abstraction has 4508 states and 5926 transitions. [2020-09-25 07:57:44,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:57:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 5926 transitions. [2020-09-25 07:57:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 07:57:45,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:45,005 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:45,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:45,005 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:45,006 INFO L82 PathProgramCache]: Analyzing trace with hash 841975191, now seen corresponding path program 1 times [2020-09-25 07:57:45,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:45,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709744144] [2020-09-25 07:57:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:57:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:57:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:50,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:57:50,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:50,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:50,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 07:57:50,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:57:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:57:50,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:50,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 07:57:50,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:57:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:50,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709744144] [2020-09-25 07:57:50,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:50,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:57:50,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395877028] [2020-09-25 07:57:50,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:50,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:50,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:50,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:50,755 INFO L87 Difference]: Start difference. First operand 4508 states and 5926 transitions. Second operand 7 states. [2020-09-25 07:57:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:53,144 INFO L93 Difference]: Finished difference Result 9889 states and 13516 transitions. [2020-09-25 07:57:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:53,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-25 07:57:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:53,172 INFO L225 Difference]: With dead ends: 9889 [2020-09-25 07:57:53,172 INFO L226 Difference]: Without dead ends: 4284 [2020-09-25 07:57:53,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2020-09-25 07:57:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 4022. [2020-09-25 07:57:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4022 states. [2020-09-25 07:57:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 5157 transitions. [2020-09-25 07:57:53,306 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 5157 transitions. Word has length 245 [2020-09-25 07:57:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:53,306 INFO L479 AbstractCegarLoop]: Abstraction has 4022 states and 5157 transitions. [2020-09-25 07:57:53,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 5157 transitions. [2020-09-25 07:57:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 07:57:53,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:53,313 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:53,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:53,313 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:53,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1359473125, now seen corresponding path program 1 times [2020-09-25 07:57:53,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:53,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251493562] [2020-09-25 07:57:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:56,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking...