/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:58,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:58,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:58,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:58,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:58,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:58,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:58,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:58,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:58,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:58,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:58,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:58,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:58,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:58,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:58,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:58,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:58,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:58,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:58,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:58,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:58,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:58,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:58,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:58,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:58,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:58,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:58,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:58,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:58,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:58,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:58,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:58,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:58,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:58,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:58,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:58,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:58,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:58,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:58,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:58,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:58,733 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 19:29:58,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:58,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:58,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:58,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:58,780 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:58,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:58,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:58,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:58,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:58,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:58,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:58,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:58,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:58,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:58,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:58,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:58,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:58,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:58,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:58,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:58,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:58,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:58,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:58,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:58,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:58,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:58,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:58,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:58,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:58,787 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:59,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:59,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:59,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:59,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:59,308 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:59,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-24 19:29:59,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b4acc71f/c604aea0d9cd45d790d175dc020392bd/FLAG2c6766fd2 [2020-09-24 19:30:00,038 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:00,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-24 19:30:00,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b4acc71f/c604aea0d9cd45d790d175dc020392bd/FLAG2c6766fd2 [2020-09-24 19:30:00,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b4acc71f/c604aea0d9cd45d790d175dc020392bd [2020-09-24 19:30:00,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:00,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:00,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:00,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:00,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:00,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:00" (1/1) ... [2020-09-24 19:30:00,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:00, skipping insertion in model container [2020-09-24 19:30:00,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:00" (1/1) ... [2020-09-24 19:30:00,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:00,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:00,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:00,823 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:01,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:01,098 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:01,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01 WrapperNode [2020-09-24 19:30:01,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:01,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:01,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:01,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:01,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:01,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:01,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:01,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:01,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (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 19:30:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:02,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:02,853 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:02,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:02 BoogieIcfgContainer [2020-09-24 19:30:02,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:02,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:02,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:02,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:02,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:00" (1/3) ... [2020-09-24 19:30:02,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:02, skipping insertion in model container [2020-09-24 19:30:02,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (2/3) ... [2020-09-24 19:30:02,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:02, skipping insertion in model container [2020-09-24 19:30:02,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:02" (3/3) ... [2020-09-24 19:30:02,876 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-24 19:30:02,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:02,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:02,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:02,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:02,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:02,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:02,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:02,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:02,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:02,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:02,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:30:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 19:30:03,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:03,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:03,019 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:03,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:03,028 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-24 19:30:03,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:03,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-24 19:30:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:30:04,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-24 19:30:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:30:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:30:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:04,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:30:04,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:30:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:04,292 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 19:30:04,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-24 19:30:04,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:04,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:30:04,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368788132] [2020-09-24 19:30:04,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:30:04,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:04,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:30:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:30:04,326 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:30:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:06,489 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-24 19:30:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:30:06,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 19:30:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:06,524 INFO L225 Difference]: With dead ends: 1163 [2020-09-24 19:30:06,524 INFO L226 Difference]: Without dead ends: 634 [2020-09-24 19:30:06,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-24 19:30:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-24 19:30:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-24 19:30:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-24 19:30:06,643 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-24 19:30:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:06,644 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-24 19:30:06,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:30:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-24 19:30:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 19:30:06,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:06,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:06,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:06,654 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-24 19:30:06,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:06,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240389737] [2020-09-24 19:30:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:07,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 19:30:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:30:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:30:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:07,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:30:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:07,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:08,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:08,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:30:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:08,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240389737] [2020-09-24 19:30:08,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:08,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:08,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088888373] [2020-09-24 19:30:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:08,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:08,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:08,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:08,124 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-24 19:30:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:10,077 INFO L93 Difference]: Finished difference Result 1471 states and 1958 transitions. [2020-09-24 19:30:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:10,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-24 19:30:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:10,089 INFO L225 Difference]: With dead ends: 1471 [2020-09-24 19:30:10,089 INFO L226 Difference]: Without dead ends: 906 [2020-09-24 19:30:10,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-09-24 19:30:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 884. [2020-09-24 19:30:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-24 19:30:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1107 transitions. [2020-09-24 19:30:10,170 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1107 transitions. Word has length 133 [2020-09-24 19:30:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:10,173 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1107 transitions. [2020-09-24 19:30:10,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1107 transitions. [2020-09-24 19:30:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 19:30:10,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:10,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:10,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:10,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash -27995731, now seen corresponding path program 1 times [2020-09-24 19:30:10,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:10,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974010972] [2020-09-24 19:30:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 19:30:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:30:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-24 19:30:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:30:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:11,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:11,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:11,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:11,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 19:30:11,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 19:30:11,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:30:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:11,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974010972] [2020-09-24 19:30:11,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:11,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:11,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608089956] [2020-09-24 19:30:11,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:11,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:11,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:11,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:11,542 INFO L87 Difference]: Start difference. First operand 884 states and 1107 transitions. Second operand 5 states. [2020-09-24 19:30:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:13,338 INFO L93 Difference]: Finished difference Result 2089 states and 2727 transitions. [2020-09-24 19:30:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:13,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-24 19:30:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:13,354 INFO L225 Difference]: With dead ends: 2089 [2020-09-24 19:30:13,354 INFO L226 Difference]: Without dead ends: 1220 [2020-09-24 19:30:13,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-09-24 19:30:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1190. [2020-09-24 19:30:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-24 19:30:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1472 transitions. [2020-09-24 19:30:13,414 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1472 transitions. Word has length 145 [2020-09-24 19:30:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:13,416 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1472 transitions. [2020-09-24 19:30:13,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1472 transitions. [2020-09-24 19:30:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 19:30:13,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:13,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:13,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:13,423 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:13,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:13,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1101697427, now seen corresponding path program 1 times [2020-09-24 19:30:13,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:13,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113079827] [2020-09-24 19:30:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 19:30:14,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:30:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:30:14,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:14,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:14,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:14,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:14,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:14,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:14,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:14,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:30:14,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:14,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:15,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:30:15,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 19:30:15,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:30:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:15,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113079827] [2020-09-24 19:30:15,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:15,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:15,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801897797] [2020-09-24 19:30:15,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:15,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:15,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:15,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:15,127 INFO L87 Difference]: Start difference. First operand 1190 states and 1472 transitions. Second operand 7 states. [2020-09-24 19:30:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:16,891 INFO L93 Difference]: Finished difference Result 2737 states and 3429 transitions. [2020-09-24 19:30:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:16,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-09-24 19:30:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:16,904 INFO L225 Difference]: With dead ends: 2737 [2020-09-24 19:30:16,905 INFO L226 Difference]: Without dead ends: 1562 [2020-09-24 19:30:16,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 19:30:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-09-24 19:30:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1514. [2020-09-24 19:30:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2020-09-24 19:30:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1793 transitions. [2020-09-24 19:30:16,974 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1793 transitions. Word has length 225 [2020-09-24 19:30:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:16,975 INFO L479 AbstractCegarLoop]: Abstraction has 1514 states and 1793 transitions. [2020-09-24 19:30:16,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1793 transitions. [2020-09-24 19:30:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 19:30:16,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:16,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:16,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:16,982 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:16,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:16,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1828729346, now seen corresponding path program 1 times [2020-09-24 19:30:16,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:16,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849882236] [2020-09-24 19:30:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:18,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:18,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 19:30:18,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:30:18,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:30:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:30:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:18,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:18,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:18,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 19:30:18,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:30:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:30:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:18,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:18,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:30:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 19:30:18,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:30:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:18,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849882236] [2020-09-24 19:30:18,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:18,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:18,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673310957] [2020-09-24 19:30:18,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:18,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:18,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:18,717 INFO L87 Difference]: Start difference. First operand 1514 states and 1793 transitions. Second operand 7 states. [2020-09-24 19:30:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:21,444 INFO L93 Difference]: Finished difference Result 3741 states and 4499 transitions. [2020-09-24 19:30:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:30:21,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-24 19:30:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:21,459 INFO L225 Difference]: With dead ends: 3741 [2020-09-24 19:30:21,459 INFO L226 Difference]: Without dead ends: 2242 [2020-09-24 19:30:21,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2020-09-24 19:30:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2177. [2020-09-24 19:30:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2177 states. [2020-09-24 19:30:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 2612 transitions. [2020-09-24 19:30:21,549 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 2612 transitions. Word has length 232 [2020-09-24 19:30:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:21,550 INFO L479 AbstractCegarLoop]: Abstraction has 2177 states and 2612 transitions. [2020-09-24 19:30:21,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 2612 transitions. [2020-09-24 19:30:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-24 19:30:21,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:21,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:21,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:21,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash -931259862, now seen corresponding path program 1 times [2020-09-24 19:30:21,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:21,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441818943] [2020-09-24 19:30:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:22,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-24 19:30:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:30:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-09-24 19:30:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 19:30:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:22,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:22,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:22,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:22,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:22,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:22,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 19:30:22,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 19:30:22,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:30:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:30:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:23,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:23,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:23,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 19:30:23,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 19:30:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:23,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441818943] [2020-09-24 19:30:23,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:23,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:23,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063739753] [2020-09-24 19:30:23,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:23,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:23,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:23,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:23,198 INFO L87 Difference]: Start difference. First operand 2177 states and 2612 transitions. Second operand 7 states. [2020-09-24 19:30:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:26,407 INFO L93 Difference]: Finished difference Result 6963 states and 8955 transitions. [2020-09-24 19:30:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:26,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-24 19:30:26,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:26,441 INFO L225 Difference]: With dead ends: 6963 [2020-09-24 19:30:26,442 INFO L226 Difference]: Without dead ends: 4801 [2020-09-24 19:30:26,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-09-24 19:30:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4781. [2020-09-24 19:30:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4781 states. [2020-09-24 19:30:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 5966 transitions. [2020-09-24 19:30:26,631 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 5966 transitions. Word has length 242 [2020-09-24 19:30:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:26,632 INFO L479 AbstractCegarLoop]: Abstraction has 4781 states and 5966 transitions. [2020-09-24 19:30:26,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 5966 transitions. [2020-09-24 19:30:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 19:30:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:26,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:26,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:30:26,647 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:26,648 INFO L82 PathProgramCache]: Analyzing trace with hash 190161451, now seen corresponding path program 1 times [2020-09-24 19:30:26,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:26,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390443087] [2020-09-24 19:30:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 19:30:27,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-24 19:30:27,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-09-24 19:30:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:30:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:27,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:30:27,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:28,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:28,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:30:28,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:30:28,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:30:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 19:30:28,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390443087] [2020-09-24 19:30:28,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:28,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:28,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241191136] [2020-09-24 19:30:28,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:28,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:28,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:28,162 INFO L87 Difference]: Start difference. First operand 4781 states and 5966 transitions. Second operand 5 states. [2020-09-24 19:30:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:30,267 INFO L93 Difference]: Finished difference Result 10489 states and 13241 transitions. [2020-09-24 19:30:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:30,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-09-24 19:30:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:30,298 INFO L225 Difference]: With dead ends: 10489 [2020-09-24 19:30:30,298 INFO L226 Difference]: Without dead ends: 4565 [2020-09-24 19:30:30,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2020-09-24 19:30:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4565. [2020-09-24 19:30:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2020-09-24 19:30:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 5596 transitions. [2020-09-24 19:30:30,460 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 5596 transitions. Word has length 251 [2020-09-24 19:30:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:30,460 INFO L479 AbstractCegarLoop]: Abstraction has 4565 states and 5596 transitions. [2020-09-24 19:30:30,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 5596 transitions. [2020-09-24 19:30:30,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-24 19:30:30,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:30,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:30,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:30:30,478 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1654391851, now seen corresponding path program 1 times [2020-09-24 19:30:30,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:30,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071741360] [2020-09-24 19:30:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:31,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-09-24 19:30:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-09-24 19:30:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-24 19:30:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-24 19:30:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:31,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:31,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 19:30:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:30:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 19:30:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 19:30:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 19:30:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:33,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071741360] [2020-09-24 19:30:33,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:33,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:33,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557019054] [2020-09-24 19:30:33,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:33,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:33,068 INFO L87 Difference]: Start difference. First operand 4565 states and 5596 transitions. Second operand 8 states. [2020-09-24 19:30:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:36,530 INFO L93 Difference]: Finished difference Result 10380 states and 12862 transitions. [2020-09-24 19:30:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:30:36,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 296 [2020-09-24 19:30:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:36,564 INFO L225 Difference]: With dead ends: 10380 [2020-09-24 19:30:36,565 INFO L226 Difference]: Without dead ends: 5840 [2020-09-24 19:30:36,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:30:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2020-09-24 19:30:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5826. [2020-09-24 19:30:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5826 states. [2020-09-24 19:30:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 7051 transitions. [2020-09-24 19:30:36,749 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 7051 transitions. Word has length 296 [2020-09-24 19:30:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:36,750 INFO L479 AbstractCegarLoop]: Abstraction has 5826 states and 7051 transitions. [2020-09-24 19:30:36,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 7051 transitions. [2020-09-24 19:30:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-24 19:30:36,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:36,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:36,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:30:36,775 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1964123842, now seen corresponding path program 1 times [2020-09-24 19:30:36,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:36,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423404972] [2020-09-24 19:30:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-09-24 19:30:37,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:37,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:30:37,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-09-24 19:30:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:30:37,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:37,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:37,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:38,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:38,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 19:30:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:38,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:38,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:38,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:30:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:30:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 19:30:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:30:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-24 19:30:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 19:30:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 19:30:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 19:30:38,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423404972] [2020-09-24 19:30:38,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:38,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:38,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515634963] [2020-09-24 19:30:38,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:38,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:38,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:38,616 INFO L87 Difference]: Start difference. First operand 5826 states and 7051 transitions. Second operand 8 states. [2020-09-24 19:30:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:41,748 INFO L93 Difference]: Finished difference Result 18638 states and 24235 transitions. [2020-09-24 19:30:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:30:41,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 312 [2020-09-24 19:30:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:41,844 INFO L225 Difference]: With dead ends: 18638 [2020-09-24 19:30:41,845 INFO L226 Difference]: Without dead ends: 12837 [2020-09-24 19:30:41,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:30:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12837 states. [2020-09-24 19:30:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12837 to 10080. [2020-09-24 19:30:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10080 states. [2020-09-24 19:30:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10080 states to 10080 states and 12445 transitions. [2020-09-24 19:30:42,264 INFO L78 Accepts]: Start accepts. Automaton has 10080 states and 12445 transitions. Word has length 312 [2020-09-24 19:30:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:42,264 INFO L479 AbstractCegarLoop]: Abstraction has 10080 states and 12445 transitions. [2020-09-24 19:30:42,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states and 12445 transitions. [2020-09-24 19:30:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-24 19:30:42,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:42,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:42,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:30:42,293 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash 981706763, now seen corresponding path program 1 times [2020-09-24 19:30:42,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:42,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374077252] [2020-09-24 19:30:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-09-24 19:30:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:30:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:30:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 19:30:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 19:30:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:43,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:43,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 19:30:43,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 19:30:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 19:30:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 19:30:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-24 19:30:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 19:30:43,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 19:30:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 270 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:30:44,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374077252] [2020-09-24 19:30:44,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:44,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:30:44,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453052895] [2020-09-24 19:30:44,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:30:44,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:30:44,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:30:44,153 INFO L87 Difference]: Start difference. First operand 10080 states and 12445 transitions. Second operand 10 states.