/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:10,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:10,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:10,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:10,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:10,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:10,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:10,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:10,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:10,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:10,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:10,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:10,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:10,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:10,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:10,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:10,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:10,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:10,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:10,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:10,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:10,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:10,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:10,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:10,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:10,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:10,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:10,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:10,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:10,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:10,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:10,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:10,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:10,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:10,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:10,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:10,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:10,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:10,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:10,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:10,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:10,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:45:10,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:10,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:10,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:10,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:10,416 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:10,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:10,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:10,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:10,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:10,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:10,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:10,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:10,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:10,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:10,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:10,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:10,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:10,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:10,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:10,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:10,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:10,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:10,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:10,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:10,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:10,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:10,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:10,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:10,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:10,424 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:10,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:10,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:10,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:10,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:10,968 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:10,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-24 21:45:11,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49b52e5d6/67e182d1954b423eade4c95ac1beb38d/FLAGca304ca22 [2020-09-24 21:45:11,732 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:11,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-24 21:45:11,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49b52e5d6/67e182d1954b423eade4c95ac1beb38d/FLAGca304ca22 [2020-09-24 21:45:11,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49b52e5d6/67e182d1954b423eade4c95ac1beb38d [2020-09-24 21:45:11,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:12,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:12,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:12,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:12,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:12,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:11" (1/1) ... [2020-09-24 21:45:12,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37feb41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12, skipping insertion in model container [2020-09-24 21:45:12,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:11" (1/1) ... [2020-09-24 21:45:12,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:12,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:12,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:12,704 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:12,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:12,824 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:12,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12 WrapperNode [2020-09-24 21:45:12,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:12,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:12,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:12,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:12,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... [2020-09-24 21:45:12,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:12,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:12,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:12,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:12,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:13,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:13,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:13,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:13,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:14,675 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:14,675 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:14,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:14 BoogieIcfgContainer [2020-09-24 21:45:14,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:14,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:14,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:14,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:14,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:11" (1/3) ... [2020-09-24 21:45:14,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be79b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:14, skipping insertion in model container [2020-09-24 21:45:14,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:12" (2/3) ... [2020-09-24 21:45:14,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be79b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:14, skipping insertion in model container [2020-09-24 21:45:14,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:14" (3/3) ... [2020-09-24 21:45:14,694 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-24 21:45:14,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:14,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:14,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:14,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:14,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:14,776 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:14,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:14,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:14,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:14,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:14,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:14,808 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 21:45:14,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:14,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:14,821 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:14,829 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-24 21:45:14,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:14,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159732029] [2020-09-24 21:45:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:15,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 21:45:15,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-24 21:45:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:45:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:16,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:16,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:45:16,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:16,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:16,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159732029] [2020-09-24 21:45:16,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:16,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:16,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395699975] [2020-09-24 21:45:16,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:16,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:16,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:16,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:16,114 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:18,294 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:45:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:18,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-24 21:45:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:18,339 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:45:18,340 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:45:18,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:45:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:45:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:45:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:45:18,480 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-24 21:45:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:18,481 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:45:18,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:45:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 21:45:18,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:18,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:18,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:18,490 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:18,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-24 21:45:18,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:18,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785287373] [2020-09-24 21:45:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:18,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:23,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 21:45:23,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:23,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:45:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 21:45:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:23,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:23,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:23,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:23,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:23,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:23,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:23,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:23,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-24 21:45:23,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:24,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785287373] [2020-09-24 21:45:24,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:24,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:24,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733105859] [2020-09-24 21:45:24,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:24,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:24,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:24,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:24,246 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:45:27,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:27,512 INFO L93 Difference]: Finished difference Result 1267 states and 1577 transitions. [2020-09-24 21:45:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:27,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-24 21:45:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:27,519 INFO L225 Difference]: With dead ends: 1267 [2020-09-24 21:45:27,520 INFO L226 Difference]: Without dead ends: 738 [2020-09-24 21:45:27,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-24 21:45:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 695. [2020-09-24 21:45:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:45:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 860 transitions. [2020-09-24 21:45:27,561 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 860 transitions. Word has length 132 [2020-09-24 21:45:27,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:27,562 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 860 transitions. [2020-09-24 21:45:27,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 860 transitions. [2020-09-24 21:45:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 21:45:27,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:27,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:27,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:27,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2030200294, now seen corresponding path program 1 times [2020-09-24 21:45:27,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:27,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541156204] [2020-09-24 21:45:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-24 21:45:32,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:45:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:32,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:32,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:32,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:32,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:33,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:33,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:33,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 21:45:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:33,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541156204] [2020-09-24 21:45:33,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:33,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:33,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947238067] [2020-09-24 21:45:33,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:33,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:33,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:33,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:33,178 INFO L87 Difference]: Start difference. First operand 695 states and 860 transitions. Second operand 7 states. [2020-09-24 21:45:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:35,589 INFO L93 Difference]: Finished difference Result 1473 states and 1985 transitions. [2020-09-24 21:45:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:45:35,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-24 21:45:35,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:35,609 INFO L225 Difference]: With dead ends: 1473 [2020-09-24 21:45:35,609 INFO L226 Difference]: Without dead ends: 943 [2020-09-24 21:45:35,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-24 21:45:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 855. [2020-09-24 21:45:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-09-24 21:45:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1075 transitions. [2020-09-24 21:45:35,686 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1075 transitions. Word has length 185 [2020-09-24 21:45:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:35,688 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1075 transitions. [2020-09-24 21:45:35,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1075 transitions. [2020-09-24 21:45:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 21:45:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:35,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:35,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:35,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1983600035, now seen corresponding path program 1 times [2020-09-24 21:45:35,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:35,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842888556] [2020-09-24 21:45:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:40,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-24 21:45:40,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:45:40,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-24 21:45:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:40,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:45:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:41,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:41,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:41,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-24 21:45:41,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:41,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:41,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 21:45:41,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:41,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842888556] [2020-09-24 21:45:41,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:41,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:41,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080845478] [2020-09-24 21:45:41,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:41,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:41,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:41,612 INFO L87 Difference]: Start difference. First operand 855 states and 1075 transitions. Second operand 10 states. [2020-09-24 21:45:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:45,824 INFO L93 Difference]: Finished difference Result 2474 states and 3371 transitions. [2020-09-24 21:45:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:45:45,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2020-09-24 21:45:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:45,842 INFO L225 Difference]: With dead ends: 2474 [2020-09-24 21:45:45,842 INFO L226 Difference]: Without dead ends: 1784 [2020-09-24 21:45:45,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:45:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-09-24 21:45:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1374. [2020-09-24 21:45:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-09-24 21:45:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1793 transitions. [2020-09-24 21:45:45,913 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1793 transitions. Word has length 224 [2020-09-24 21:45:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:45,914 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 1793 transitions. [2020-09-24 21:45:45,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1793 transitions. [2020-09-24 21:45:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-24 21:45:45,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:45,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:45,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:45,921 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1281775557, now seen corresponding path program 1 times [2020-09-24 21:45:45,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:45,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739000327] [2020-09-24 21:45:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 21:45:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 21:45:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:51,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:45:51,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 21:45:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:51,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 21:45:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 100 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:51,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739000327] [2020-09-24 21:45:51,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:51,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:51,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616560007] [2020-09-24 21:45:51,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:51,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:51,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:51,876 INFO L87 Difference]: Start difference. First operand 1374 states and 1793 transitions. Second operand 13 states. [2020-09-24 21:45:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:57,667 INFO L93 Difference]: Finished difference Result 3732 states and 5288 transitions. [2020-09-24 21:45:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:45:57,667 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 234 [2020-09-24 21:45:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:57,682 INFO L225 Difference]: With dead ends: 3732 [2020-09-24 21:45:57,682 INFO L226 Difference]: Without dead ends: 2480 [2020-09-24 21:45:57,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:45:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-09-24 21:45:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1930. [2020-09-24 21:45:57,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-09-24 21:45:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2633 transitions. [2020-09-24 21:45:57,761 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2633 transitions. Word has length 234 [2020-09-24 21:45:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:57,762 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2633 transitions. [2020-09-24 21:45:57,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2633 transitions. [2020-09-24 21:45:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 21:45:57,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:57,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:57,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:57,768 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:57,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1015798065, now seen corresponding path program 1 times [2020-09-24 21:45:57,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:57,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798799323] [2020-09-24 21:45:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking...