/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:48,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:48,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:48,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:48,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:48,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:48,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:48,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:48,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:48,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:48,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:48,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:48,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:48,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:48,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:48,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:48,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:48,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:48,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:48,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:48,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:48,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:48,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:48,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:48,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:48,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:48,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:48,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:48,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:48,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:48,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:48,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:48,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:48,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:48,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:48,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:48,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:48,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:48,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:48,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:48,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:48,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:44:48,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:48,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:48,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:48,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:48,813 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:48,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:48,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:48,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:48,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:48,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:48,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:48,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:48,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:48,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:48,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:48,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:48,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:48,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:48,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:48,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:48,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:48,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:48,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:48,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:48,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:48,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:48,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:48,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:48,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:48,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:49,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:49,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:49,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:49,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:49,310 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:49,311 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-24 21:44:49,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30d9c91fe/2fe7ea4eb39443bfb8d123a8657b5717/FLAG9f523655c [2020-09-24 21:44:50,037 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:50,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-24 21:44:50,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30d9c91fe/2fe7ea4eb39443bfb8d123a8657b5717/FLAG9f523655c [2020-09-24 21:44:50,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30d9c91fe/2fe7ea4eb39443bfb8d123a8657b5717 [2020-09-24 21:44:50,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:50,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:50,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:50,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:50,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:50,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:50" (1/1) ... [2020-09-24 21:44:50,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:50, skipping insertion in model container [2020-09-24 21:44:50,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:50" (1/1) ... [2020-09-24 21:44:50,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:50,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:50,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:50,892 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:51,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:51,134 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:51,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51 WrapperNode [2020-09-24 21:44:51,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:51,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:51,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:51,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:51,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:51,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:51,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:51,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:51,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:52,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:52,889 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:52,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:52 BoogieIcfgContainer [2020-09-24 21:44:52,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:52,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:52,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:52,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:52,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:50" (1/3) ... [2020-09-24 21:44:52,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e8525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:52, skipping insertion in model container [2020-09-24 21:44:52,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (2/3) ... [2020-09-24 21:44:52,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e8525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:52, skipping insertion in model container [2020-09-24 21:44:52,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:52" (3/3) ... [2020-09-24 21:44:52,909 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-09-24 21:44:52,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:52,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:52,958 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:52,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:52,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:52,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:52,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:52,994 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:52,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:52,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:52,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 21:44:53,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:53,039 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] [2020-09-24 21:44:53,039 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1688264769, now seen corresponding path program 1 times [2020-09-24 21:44:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:53,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165952990] [2020-09-24 21:44:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:53,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 21:44:53,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-24 21:44:53,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 21:44:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:53,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:44:54,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:54,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165952990] [2020-09-24 21:44:54,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:54,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:54,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831691059] [2020-09-24 21:44:54,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:54,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:54,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:54,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:54,094 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:56,239 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-24 21:44:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:56,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-09-24 21:44:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:56,265 INFO L225 Difference]: With dead ends: 1163 [2020-09-24 21:44:56,265 INFO L226 Difference]: Without dead ends: 634 [2020-09-24 21:44:56,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-24 21:44:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-24 21:44:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-24 21:44:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-24 21:44:56,402 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 48 [2020-09-24 21:44:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:56,402 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-24 21:44:56,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-24 21:44:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 21:44:56,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:56,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:56,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:56,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2006898993, now seen corresponding path program 1 times [2020-09-24 21:44:56,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:56,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909403921] [2020-09-24 21:44:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 21:44:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2852 [2020-09-24 21:44:59,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 21:44:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:44:59,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 21:44:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:45:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:00,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909403921] [2020-09-24 21:45:00,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:00,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:00,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083963957] [2020-09-24 21:45:00,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:00,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:00,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:00,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:00,245 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 9 states. [2020-09-24 21:45:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:03,545 INFO L93 Difference]: Finished difference Result 1644 states and 2202 transitions. [2020-09-24 21:45:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:03,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-09-24 21:45:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:03,554 INFO L225 Difference]: With dead ends: 1644 [2020-09-24 21:45:03,554 INFO L226 Difference]: Without dead ends: 1079 [2020-09-24 21:45:03,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-09-24 21:45:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1036. [2020-09-24 21:45:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-24 21:45:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1365 transitions. [2020-09-24 21:45:03,618 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1365 transitions. Word has length 127 [2020-09-24 21:45:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:03,619 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1365 transitions. [2020-09-24 21:45:03,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1365 transitions. [2020-09-24 21:45:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-24 21:45:03,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:03,672 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:03,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:03,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1511651205, now seen corresponding path program 1 times [2020-09-24 21:45:03,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:03,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085855500] [2020-09-24 21:45:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-24 21:45:08,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:45:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 21:45:08,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-24 21:45:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:08,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:08,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:09,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 21:45:09,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:09,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 21:45:09,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 67 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:45:09,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085855500] [2020-09-24 21:45:09,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:09,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:09,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988833983] [2020-09-24 21:45:09,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:09,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:09,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:09,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:09,466 INFO L87 Difference]: Start difference. First operand 1036 states and 1365 transitions. Second operand 9 states. [2020-09-24 21:45:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:13,087 INFO L93 Difference]: Finished difference Result 2289 states and 3238 transitions. [2020-09-24 21:45:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:45:13,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-09-24 21:45:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:13,105 INFO L225 Difference]: With dead ends: 2289 [2020-09-24 21:45:13,105 INFO L226 Difference]: Without dead ends: 1418 [2020-09-24 21:45:13,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2020-09-24 21:45:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1078. [2020-09-24 21:45:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1078 states. [2020-09-24 21:45:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1364 transitions. [2020-09-24 21:45:13,174 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1364 transitions. Word has length 219 [2020-09-24 21:45:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:13,175 INFO L479 AbstractCegarLoop]: Abstraction has 1078 states and 1364 transitions. [2020-09-24 21:45:13,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1364 transitions. [2020-09-24 21:45:13,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 21:45:13,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:13,182 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:13,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:13,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:13,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:13,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1117060057, now seen corresponding path program 1 times [2020-09-24 21:45:13,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:13,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135776751] [2020-09-24 21:45:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 21:45:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:45:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:18,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:18,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:45:18,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:18,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:18,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:18,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:18,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-24 21:45:18,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 21:45:19,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 83 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:19,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135776751] [2020-09-24 21:45:19,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:19,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:19,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340765126] [2020-09-24 21:45:19,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:19,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:19,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:19,719 INFO L87 Difference]: Start difference. First operand 1078 states and 1364 transitions. Second operand 13 states. [2020-09-24 21:45:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:23,354 INFO L93 Difference]: Finished difference Result 2070 states and 2714 transitions. [2020-09-24 21:45:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:45:23,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 229 [2020-09-24 21:45:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:23,364 INFO L225 Difference]: With dead ends: 2070 [2020-09-24 21:45:23,364 INFO L226 Difference]: Without dead ends: 1138 [2020-09-24 21:45:23,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:45:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-09-24 21:45:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1082. [2020-09-24 21:45:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2020-09-24 21:45:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1373 transitions. [2020-09-24 21:45:23,423 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1373 transitions. Word has length 229 [2020-09-24 21:45:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:23,423 INFO L479 AbstractCegarLoop]: Abstraction has 1082 states and 1373 transitions. [2020-09-24 21:45:23,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1373 transitions. [2020-09-24 21:45:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 21:45:23,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:23,429 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:23,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:23,429 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -859236314, now seen corresponding path program 1 times [2020-09-24 21:45:23,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856223165] [2020-09-24 21:45:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:23,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-24 21:45:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:45:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-09-24 21:45:28,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 21:45:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 21:45:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 21:45:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 21:45:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:45:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:29,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 21:45:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:45:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-24 21:45:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:45:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 64 proven. 77 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:45:29,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856223165] [2020-09-24 21:45:29,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:29,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:45:29,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350655874] [2020-09-24 21:45:29,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:45:29,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:29,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:45:29,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:45:29,084 INFO L87 Difference]: Start difference. First operand 1082 states and 1373 transitions. Second operand 8 states. [2020-09-24 21:45:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:31,451 INFO L93 Difference]: Finished difference Result 2482 states and 3314 transitions. [2020-09-24 21:45:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:45:31,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-09-24 21:45:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:31,460 INFO L225 Difference]: With dead ends: 2482 [2020-09-24 21:45:31,461 INFO L226 Difference]: Without dead ends: 1568 [2020-09-24 21:45:31,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-09-24 21:45:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1554. [2020-09-24 21:45:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-24 21:45:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1965 transitions. [2020-09-24 21:45:31,511 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1965 transitions. Word has length 239 [2020-09-24 21:45:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:31,512 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1965 transitions. [2020-09-24 21:45:31,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:45:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1965 transitions. [2020-09-24 21:45:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-24 21:45:31,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:31,517 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:45:31,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:31,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:31,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:31,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2049326008, now seen corresponding path program 1 times [2020-09-24 21:45:31,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:31,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838489450] [2020-09-24 21:45:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-24 21:45:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 21:45:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:45:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:45:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-09-24 21:45:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:36,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:45:36,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 21:45:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 21:45:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:45:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 21:45:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 21:45:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 21:45:37,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838489450] [2020-09-24 21:45:37,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:37,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:37,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446431006] [2020-09-24 21:45:37,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:37,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:37,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:37,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:37,470 INFO L87 Difference]: Start difference. First operand 1554 states and 1965 transitions. Second operand 9 states.