/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=0.4 --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/Problem02_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:54,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:54,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:54,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:54,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:54,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:54,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:54,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:54,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:54,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:54,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:54,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:54,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:54,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:54,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:54,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:54,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:54,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:54,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:54,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:54,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:54,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:54,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:54,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:54,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:54,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:54,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:54,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:54,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:54,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:54,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:54,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:54,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:54,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:54,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:54,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:54,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:54,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:54,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:54,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:54,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:54,172 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 05:35:54,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:54,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:54,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:54,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:54,223 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:54,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:54,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:54,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:54,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:54,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:54,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:54,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:54,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:54,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:54,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:54,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:54,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:54,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:54,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:54,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:54,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:54,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:54,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:54,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:54,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:54,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:54,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:54,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:54,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:54,230 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:35:54,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:54,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:54,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:54,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:54,743 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:54,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-25 05:35:54,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2543e687/b87b7d22b1344888b0279db66cc1b8bd/FLAGbbea3c6f6 [2020-09-25 05:35:55,411 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:55,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-25 05:35:55,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2543e687/b87b7d22b1344888b0279db66cc1b8bd/FLAGbbea3c6f6 [2020-09-25 05:35:55,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2543e687/b87b7d22b1344888b0279db66cc1b8bd [2020-09-25 05:35:55,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:55,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:55,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:55,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:55,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:55,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:55" (1/1) ... [2020-09-25 05:35:55,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:55, skipping insertion in model container [2020-09-25 05:35:55,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:55" (1/1) ... [2020-09-25 05:35:55,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:55,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:56,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:56,323 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:56,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:56,568 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:56,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56 WrapperNode [2020-09-25 05:35:56,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:56,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:56,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:56,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:56,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (1/1) ... [2020-09-25 05:35:56,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:56,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:56,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:56,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:56,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (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 05:35:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:58,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:58,275 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:58,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:58 BoogieIcfgContainer [2020-09-25 05:35:58,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:58,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:58,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:58,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:58,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:55" (1/3) ... [2020-09-25 05:35:58,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:58, skipping insertion in model container [2020-09-25 05:35:58,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:56" (2/3) ... [2020-09-25 05:35:58,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:58, skipping insertion in model container [2020-09-25 05:35:58,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:58" (3/3) ... [2020-09-25 05:35:58,301 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2020-09-25 05:35:58,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:58,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:58,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:58,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:58,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:58,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:58,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:58,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:58,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:58,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:58,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 05:35:58,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:58,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:58,443 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:58,451 INFO L82 PathProgramCache]: Analyzing trace with hash 405983745, now seen corresponding path program 1 times [2020-09-25 05:35:58,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:58,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-25 05:35:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:03,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 05:36:03,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:36:03,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:03,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:36:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 05:36:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:36:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:03,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:03,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:03,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:36:03,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:03,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:36:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:36:04,036 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 05:36:04,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-25 05:36:04,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:04,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:04,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853877448] [2020-09-25 05:36:04,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:04,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:04,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:04,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:04,071 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:06,550 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 05:36:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:06,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-09-25 05:36:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:06,586 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 05:36:06,586 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 05:36:06,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 05:36:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 05:36:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 05:36:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 05:36:06,709 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 118 [2020-09-25 05:36:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:06,710 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 05:36:06,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 05:36:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 05:36:06,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:06,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:06,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:06,734 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1821694635, now seen corresponding path program 1 times [2020-09-25 05:36:06,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:06,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468646210] [2020-09-25 05:36:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:11,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 05:36:11,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:36:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:36:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:11,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:36:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 05:36:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:12,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:12,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:36:12,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:12,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:12,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:36:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:36:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:36:12,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:12,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:36:12,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:12,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468646210] [2020-09-25 05:36:12,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:12,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:12,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540905622] [2020-09-25 05:36:12,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:12,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:12,109 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 05:36:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:14,165 INFO L93 Difference]: Finished difference Result 1609 states and 2066 transitions. [2020-09-25 05:36:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:14,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 05:36:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:14,174 INFO L225 Difference]: With dead ends: 1609 [2020-09-25 05:36:14,174 INFO L226 Difference]: Without dead ends: 972 [2020-09-25 05:36:14,178 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 [2020-09-25 05:36:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-25 05:36:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 962. [2020-09-25 05:36:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-09-25 05:36:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1226 transitions. [2020-09-25 05:36:14,225 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1226 transitions. Word has length 136 [2020-09-25 05:36:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:14,225 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1226 transitions. [2020-09-25 05:36:14,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1226 transitions. [2020-09-25 05:36:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:36:14,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:14,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:14,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:14,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1653572791, now seen corresponding path program 1 times [2020-09-25 05:36:14,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:14,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363265935] [2020-09-25 05:36:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:18,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:36:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3814 [2020-09-25 05:36:18,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:18,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 05:36:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 05:36:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:36:18,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:18,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:18,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:18,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:18,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:18,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:36:18,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:18,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:36:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:18,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363265935] [2020-09-25 05:36:18,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:18,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:18,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822778447] [2020-09-25 05:36:18,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:18,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:18,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:18,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:18,424 INFO L87 Difference]: Start difference. First operand 962 states and 1226 transitions. Second operand 5 states. [2020-09-25 05:36:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:20,621 INFO L93 Difference]: Finished difference Result 2516 states and 3337 transitions. [2020-09-25 05:36:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:20,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 05:36:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:20,642 INFO L225 Difference]: With dead ends: 2516 [2020-09-25 05:36:20,642 INFO L226 Difference]: Without dead ends: 1199 [2020-09-25 05:36:20,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-09-25 05:36:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1188. [2020-09-25 05:36:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-25 05:36:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1440 transitions. [2020-09-25 05:36:20,704 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1440 transitions. Word has length 156 [2020-09-25 05:36:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:20,705 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1440 transitions. [2020-09-25 05:36:20,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1440 transitions. [2020-09-25 05:36:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:36:20,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:20,712 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:20,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:36:20,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1367701794, now seen corresponding path program 1 times [2020-09-25 05:36:20,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:20,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46697630] [2020-09-25 05:36:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:25,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 05:36:25,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 05:36:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:25,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:25,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:36:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:25,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:25,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:25,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:36:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:25,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:36:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:36:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:36:25,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:25,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:36:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:36:26,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46697630] [2020-09-25 05:36:26,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:26,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:26,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675509034] [2020-09-25 05:36:26,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:26,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:26,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:26,054 INFO L87 Difference]: Start difference. First operand 1188 states and 1440 transitions. Second operand 5 states. [2020-09-25 05:36:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:27,938 INFO L93 Difference]: Finished difference Result 3146 states and 3896 transitions. [2020-09-25 05:36:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:27,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 05:36:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:27,950 INFO L225 Difference]: With dead ends: 3146 [2020-09-25 05:36:27,951 INFO L226 Difference]: Without dead ends: 1669 [2020-09-25 05:36:27,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-09-25 05:36:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1637. [2020-09-25 05:36:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 05:36:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 1947 transitions. [2020-09-25 05:36:28,016 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 1947 transitions. Word has length 182 [2020-09-25 05:36:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:28,017 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 1947 transitions. [2020-09-25 05:36:28,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 1947 transitions. [2020-09-25 05:36:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 05:36:28,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:28,026 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:28,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:36:28,027 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash 709745354, now seen corresponding path program 1 times [2020-09-25 05:36:28,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:28,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284135498] [2020-09-25 05:36:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 05:36:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:36:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 05:36:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:33,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-25 05:36:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 05:36:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:33,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:33,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:36:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:33,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:33,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:33,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:36:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:33,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:36:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:33,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:36:33,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 05:36:33,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:33,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:36:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:36:33,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284135498] [2020-09-25 05:36:33,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:33,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:36:33,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946061699] [2020-09-25 05:36:33,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:36:33,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:36:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:33,468 INFO L87 Difference]: Start difference. First operand 1637 states and 1947 transitions. Second operand 6 states. [2020-09-25 05:36:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:36,115 INFO L93 Difference]: Finished difference Result 4753 states and 5809 transitions. [2020-09-25 05:36:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:36:36,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2020-09-25 05:36:36,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:36,135 INFO L225 Difference]: With dead ends: 4753 [2020-09-25 05:36:36,135 INFO L226 Difference]: Without dead ends: 3137 [2020-09-25 05:36:36,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:36:36,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2020-09-25 05:36:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 2856. [2020-09-25 05:36:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-09-25 05:36:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3478 transitions. [2020-09-25 05:36:36,260 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3478 transitions. Word has length 207 [2020-09-25 05:36:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:36,261 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 3478 transitions. [2020-09-25 05:36:36,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:36:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3478 transitions. [2020-09-25 05:36:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 05:36:36,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:36,274 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:36,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:36,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:36,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1650988844, now seen corresponding path program 1 times [2020-09-25 05:36:36,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:36,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136706658] [2020-09-25 05:36:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 05:36:41,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:36:41,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 05:36:41,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-25 05:36:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:36:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:36:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:36:41,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:36:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:36:41,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:36:41,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:36:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:36:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:36:41,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136706658] [2020-09-25 05:36:41,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:41,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:36:41,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394693048] [2020-09-25 05:36:41,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:41,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:41,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:41,638 INFO L87 Difference]: Start difference. First operand 2856 states and 3478 transitions. Second operand 5 states. [2020-09-25 05:36:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:43,209 INFO L93 Difference]: Finished difference Result 6159 states and 7589 transitions. [2020-09-25 05:36:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:43,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-09-25 05:36:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:43,215 INFO L225 Difference]: With dead ends: 6159 [2020-09-25 05:36:43,215 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:36:43,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:36:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:36:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:36:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:36:43,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 225 [2020-09-25 05:36:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:43,235 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:36:43,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:36:43,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:36:43,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:36:43,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:36:44,255 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 26 [2020-09-25 05:36:44,476 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 26