/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:14:18,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:14:18,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:14:18,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:14:18,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:14:18,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:14:18,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:14:18,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:14:18,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:14:18,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:14:18,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:14:18,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:14:18,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:14:18,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:14:18,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:14:18,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:14:18,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:14:18,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:14:18,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:14:18,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:14:18,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:14:18,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:14:18,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:14:18,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:14:18,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:14:18,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:14:18,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:14:18,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:14:18,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:14:18,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 17:14:18,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:14:18,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:14:18,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:14:18,940 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 17:14:18,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:14:18,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:14:18,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:14:18,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:14:18,999 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:14:19,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:14:19,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:14:19,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:14:19,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:14:19,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:14:19,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:14:19,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:14:19,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:14:19,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:14:19,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:14:19,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:14:19,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:14:19,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:14:19,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:14:19,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:14:19,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:14:19,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:14:19,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:14:19,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:14:19,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:14:19,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:14:19,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:14:19,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:14:19,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:14:19,005 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;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;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;log-additional-information=true; [2020-09-24 17:14:19,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:14:19,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:14:19,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:14:19,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:14:19,501 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:14:19,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-24 17:14:19,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58134a751/565fb90bb71b4e5c8d16d6ef3f71d6e9/FLAG60e6ea10f [2020-09-24 17:14:20,279 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:14:20,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-24 17:14:20,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58134a751/565fb90bb71b4e5c8d16d6ef3f71d6e9/FLAG60e6ea10f [2020-09-24 17:14:20,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58134a751/565fb90bb71b4e5c8d16d6ef3f71d6e9 [2020-09-24 17:14:20,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:14:20,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:14:20,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:14:20,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:14:20,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:14:20,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:14:20" (1/1) ... [2020-09-24 17:14:20,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:20, skipping insertion in model container [2020-09-24 17:14:20,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:14:20" (1/1) ... [2020-09-24 17:14:20,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:14:20,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:14:21,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:14:21,055 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:14:21,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:14:21,320 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:14:21,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21 WrapperNode [2020-09-24 17:14:21,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:14:21,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:14:21,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:14:21,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:14:21,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (1/1) ... [2020-09-24 17:14:21,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:14:21,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:14:21,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:14:21,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:14:21,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (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 17:14:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:14:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:14:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:14:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:14:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:14:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:14:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:14:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:14:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:14:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:14:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:14:22,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:14:22,863 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:14:22,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:14:22 BoogieIcfgContainer [2020-09-24 17:14:22,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:14:22,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:14:22,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:14:22,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:14:22,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:14:20" (1/3) ... [2020-09-24 17:14:22,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:14:22, skipping insertion in model container [2020-09-24 17:14:22,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:14:21" (2/3) ... [2020-09-24 17:14:22,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:14:22, skipping insertion in model container [2020-09-24 17:14:22,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:14:22" (3/3) ... [2020-09-24 17:14:22,883 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-24 17:14:22,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:14:22,907 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:14:22,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:14:22,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:14:22,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:14:22,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:14:22,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:14:22,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:14:22,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:14:22,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:14:22,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:14:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 17:14:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 17:14:23,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:14:23,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:23,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:14:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:14:23,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-24 17:14:23,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:14:23,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-24 17:14:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:14:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:14:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:38,944 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:14:38,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:14:38,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 17:14:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15590 [2020-09-24 17:14:38,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:14:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:14:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 17:14:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 17:14:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:14:39,759 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-09-24 17:14:39,991 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-24 17:14:40,200 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-09-24 17:14:40,377 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-09-24 17:14:40,605 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-09-24 17:14:40,749 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-09-24 17:14:40,933 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-09-24 17:14:41,101 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-09-24 17:14:41,259 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2020-09-24 17:14:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:14:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:14:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:41,624 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:14:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:14:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:14:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 17:14:41,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:14:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:14:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:14:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:14:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:14:42,031 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 17:14:42,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-24 17:14:42,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:14:42,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-24 17:14:42,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930421361] [2020-09-24 17:14:42,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 17:14:42,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:14:42,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 17:14:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-09-24 17:14:42,069 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 22 states. [2020-09-24 17:14:42,477 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-09-24 17:14:42,698 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-09-24 17:14:42,990 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 17:14:43,415 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-09-24 17:14:43,828 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-09-24 17:14:44,224 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 17:14:44,450 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-24 17:14:44,874 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-09-24 17:14:45,582 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 17:14:45,788 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 17:14:46,132 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 17:14:46,443 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-24 17:14:46,934 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 17:14:47,230 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-09-24 17:14:47,505 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-24 17:14:47,883 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 17:14:48,170 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-09-24 17:14:48,676 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 17:14:48,988 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-09-24 17:14:49,416 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 17:14:50,046 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 17:14:50,531 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 17:14:50,880 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 17:14:51,422 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-09-24 17:14:51,735 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 17:14:52,081 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 17:14:52,878 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 17:14:53,163 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 17:14:53,507 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 17:14:53,823 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 17:14:54,303 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-09-24 17:14:55,083 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-09-24 17:14:55,473 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 17:14:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:14:56,693 INFO L93 Difference]: Finished difference Result 1733 states and 2467 transitions. [2020-09-24 17:14:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-24 17:14:56,695 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 164 [2020-09-24 17:14:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:14:56,726 INFO L225 Difference]: With dead ends: 1733 [2020-09-24 17:14:56,727 INFO L226 Difference]: Without dead ends: 999 [2020-09-24 17:14:56,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1144, Invalid=3146, Unknown=0, NotChecked=0, Total=4290 [2020-09-24 17:14:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-09-24 17:14:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 886. [2020-09-24 17:14:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 17:14:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1060 transitions. [2020-09-24 17:14:56,898 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1060 transitions. Word has length 164 [2020-09-24 17:14:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:14:56,900 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1060 transitions. [2020-09-24 17:14:56,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 17:14:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1060 transitions. [2020-09-24 17:14:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 17:14:56,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:14:56,929 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:56,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:14:56,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:14:56,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:14:56,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1632286597, now seen corresponding path program 1 times [2020-09-24 17:14:56,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:14:56,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232741704] [2020-09-24 17:14:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:14:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:14:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:14:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:08,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:15:08,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 17:15:08,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 17:15:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11122 [2020-09-24 17:15:08,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:15:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:15:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:15:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-24 17:15:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:15:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:15:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:15:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:08,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:15:08,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:15:08,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:15:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:15:08,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:15:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:15:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:15:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:15:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:15:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 17:15:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:15:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:08,374 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:15:08,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:15:08,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:15:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:15:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:15:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:15:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:15:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:15:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:15:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:15:08,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232741704] [2020-09-24 17:15:08,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:15:08,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 17:15:08,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338474257] [2020-09-24 17:15:08,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:15:08,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:15:08,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:15:08,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:15:08,522 INFO L87 Difference]: Start difference. First operand 886 states and 1060 transitions. Second operand 5 states. [2020-09-24 17:15:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:15:10,475 INFO L93 Difference]: Finished difference Result 2142 states and 2658 transitions. [2020-09-24 17:15:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:15:10,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-09-24 17:15:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:15:10,486 INFO L225 Difference]: With dead ends: 2142 [2020-09-24 17:15:10,486 INFO L226 Difference]: Without dead ends: 1336 [2020-09-24 17:15:10,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:15:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-09-24 17:15:10,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1336. [2020-09-24 17:15:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-24 17:15:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1639 transitions. [2020-09-24 17:15:10,573 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1639 transitions. Word has length 186 [2020-09-24 17:15:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:15:10,574 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1639 transitions. [2020-09-24 17:15:10,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:15:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1639 transitions. [2020-09-24 17:15:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 17:15:10,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:15:10,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:10,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:15:10,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:15:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:15:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 749242086, now seen corresponding path program 1 times [2020-09-24 17:15:10,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:15:10,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203227154] [2020-09-24 17:15:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:15:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:15:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:15:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking...