/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=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/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:48,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:48,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:48,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:48,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:48,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:48,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:48,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:48,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:48,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:48,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:48,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:48,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:48,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:48,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:48,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:48,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:48,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:48,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:48,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:48,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:48,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:48,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:48,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:48,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:48,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:48,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:48,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:48,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:48,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:48,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:48,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:48,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:48,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:48,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:48,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:48,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:48,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:48,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:48,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:48,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:48,614 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 18:25:48,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:48,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:48,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:48,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:48,672 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:48,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:48,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:48,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:48,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:48,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:48,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:48,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:48,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:48,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:48,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:48,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:48,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:48,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:48,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:48,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:48,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:48,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:48,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:48,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:48,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:48,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:48,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:48,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:48,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:48,680 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=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:25:49,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:49,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:49,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:49,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:49,168 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:49,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-24 18:25:49,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d27358f01/be8bf1bb6a834020bf850fbe36f3956b/FLAGe40746bf8 [2020-09-24 18:25:49,973 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:49,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-24 18:25:49,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d27358f01/be8bf1bb6a834020bf850fbe36f3956b/FLAGe40746bf8 [2020-09-24 18:25:50,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d27358f01/be8bf1bb6a834020bf850fbe36f3956b [2020-09-24 18:25:50,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:50,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:50,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:50,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:50,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:50,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:50" (1/1) ... [2020-09-24 18:25:50,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:50, skipping insertion in model container [2020-09-24 18:25:50,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:50" (1/1) ... [2020-09-24 18:25:50,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:50,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:50,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:51,004 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:51,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:51,213 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:51,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51 WrapperNode [2020-09-24 18:25:51,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:51,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:51,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:51,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:51,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (1/1) ... [2020-09-24 18:25:51,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:51,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:51,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:51,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:51,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (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 18:25:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:54,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:54,006 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:54,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:54 BoogieIcfgContainer [2020-09-24 18:25:54,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:54,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:54,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:54,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:54,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:50" (1/3) ... [2020-09-24 18:25:54,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98da5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:54, skipping insertion in model container [2020-09-24 18:25:54,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:51" (2/3) ... [2020-09-24 18:25:54,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98da5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:54, skipping insertion in model container [2020-09-24 18:25:54,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:54" (3/3) ... [2020-09-24 18:25:54,030 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-24 18:25:54,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:54,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:54,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:54,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:54,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:54,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:54,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:54,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:54,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:54,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:54,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-24 18:25:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:25:54,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:54,164 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] [2020-09-24 18:25:54,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:54,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:54,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-24 18:25:54,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:54,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654495041] [2020-09-24 18:25:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:55,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:25:55,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:55,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-09-24 18:25:55,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:25:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:25:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:25:55,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:55,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:25:55,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:25:55,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:25:55,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:55,402 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 18:25:55,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654495041] [2020-09-24 18:25:55,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:55,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:55,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968893071] [2020-09-24 18:25:55,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:55,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:55,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:55,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:55,435 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-24 18:25:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:59,825 INFO L93 Difference]: Finished difference Result 2039 states and 2640 transitions. [2020-09-24 18:25:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:59,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 18:25:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:59,863 INFO L225 Difference]: With dead ends: 2039 [2020-09-24 18:25:59,864 INFO L226 Difference]: Without dead ends: 1170 [2020-09-24 18:25:59,877 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 18:25:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-24 18:25:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 959. [2020-09-24 18:25:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-09-24 18:25:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1158 transitions. [2020-09-24 18:26:00,001 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1158 transitions. Word has length 34 [2020-09-24 18:26:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:00,002 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1158 transitions. [2020-09-24 18:26:00,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:26:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1158 transitions. [2020-09-24 18:26:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 18:26:00,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:00,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:00,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:26:00,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:00,010 INFO L82 PathProgramCache]: Analyzing trace with hash 110158416, now seen corresponding path program 1 times [2020-09-24 18:26:00,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:00,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827718417] [2020-09-24 18:26:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:04,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 18:26:04,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:26:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4067 [2020-09-24 18:26:04,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:26:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:26:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:26:04,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:04,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 18:26:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 18:26:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:26:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:26:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:04,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827718417] [2020-09-24 18:26:04,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:04,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:04,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583089795] [2020-09-24 18:26:04,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:04,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:04,587 INFO L87 Difference]: Start difference. First operand 959 states and 1158 transitions. Second operand 5 states. [2020-09-24 18:26:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:08,229 INFO L93 Difference]: Finished difference Result 2328 states and 2933 transitions. [2020-09-24 18:26:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:08,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-09-24 18:26:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:08,243 INFO L225 Difference]: With dead ends: 2328 [2020-09-24 18:26:08,243 INFO L226 Difference]: Without dead ends: 1386 [2020-09-24 18:26:08,247 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 18:26:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-09-24 18:26:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1364. [2020-09-24 18:26:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-09-24 18:26:08,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1646 transitions. [2020-09-24 18:26:08,290 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1646 transitions. Word has length 115 [2020-09-24 18:26:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:08,291 INFO L479 AbstractCegarLoop]: Abstraction has 1364 states and 1646 transitions. [2020-09-24 18:26:08,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1646 transitions. [2020-09-24 18:26:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 18:26:08,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:08,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:08,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:26:08,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:08,295 INFO L82 PathProgramCache]: Analyzing trace with hash 598873241, now seen corresponding path program 1 times [2020-09-24 18:26:08,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:08,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624475206] [2020-09-24 18:26:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:12,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:26:12,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:26:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4292 [2020-09-24 18:26:12,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 18:26:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:26:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:12,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:26:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:12,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:26:12,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 18:26:12,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:12,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:26:12,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:12,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624475206] [2020-09-24 18:26:12,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:12,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:12,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644629348] [2020-09-24 18:26:12,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:12,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:12,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:12,946 INFO L87 Difference]: Start difference. First operand 1364 states and 1646 transitions. Second operand 5 states. [2020-09-24 18:26:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:17,216 INFO L93 Difference]: Finished difference Result 3274 states and 4048 transitions. [2020-09-24 18:26:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:17,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-09-24 18:26:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:17,229 INFO L225 Difference]: With dead ends: 3274 [2020-09-24 18:26:17,229 INFO L226 Difference]: Without dead ends: 1927 [2020-09-24 18:26:17,234 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 18:26:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-09-24 18:26:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1755. [2020-09-24 18:26:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-24 18:26:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2132 transitions. [2020-09-24 18:26:17,291 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2132 transitions. Word has length 123 [2020-09-24 18:26:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:17,294 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2132 transitions. [2020-09-24 18:26:17,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2132 transitions. [2020-09-24 18:26:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 18:26:17,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:17,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:17,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:26:17,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:17,309 INFO L82 PathProgramCache]: Analyzing trace with hash 117839670, now seen corresponding path program 1 times [2020-09-24 18:26:17,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:17,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141655921] [2020-09-24 18:26:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:20,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 18:26:20,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:26:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-09-24 18:26:20,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-09-24 18:26:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:26:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:20,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:20,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:26:20,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:20,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 18:26:20,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:20,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 18:26:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 18:26:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:20,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141655921] [2020-09-24 18:26:20,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:20,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:20,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536098797] [2020-09-24 18:26:20,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:20,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:20,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:20,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:20,427 INFO L87 Difference]: Start difference. First operand 1755 states and 2132 transitions. Second operand 5 states. [2020-09-24 18:26:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:24,835 INFO L93 Difference]: Finished difference Result 4358 states and 5417 transitions. [2020-09-24 18:26:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:24,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-24 18:26:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:24,860 INFO L225 Difference]: With dead ends: 4358 [2020-09-24 18:26:24,861 INFO L226 Difference]: Without dead ends: 2620 [2020-09-24 18:26:24,866 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 18:26:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2020-09-24 18:26:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2425. [2020-09-24 18:26:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-09-24 18:26:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2991 transitions. [2020-09-24 18:26:24,927 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2991 transitions. Word has length 133 [2020-09-24 18:26:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:24,928 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 2991 transitions. [2020-09-24 18:26:24,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2991 transitions. [2020-09-24 18:26:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:26:24,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:24,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:24,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:26:24,932 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:24,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1293143201, now seen corresponding path program 1 times [2020-09-24 18:26:24,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:24,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804645395] [2020-09-24 18:26:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:26:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:26:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-24 18:26:30,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 18:26:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:26:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:26:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:26:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:30,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 18:26:30,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 18:26:30,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 18:26:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:30,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804645395] [2020-09-24 18:26:30,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:30,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:30,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269863444] [2020-09-24 18:26:30,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:30,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:30,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:30,455 INFO L87 Difference]: Start difference. First operand 2425 states and 2991 transitions. Second operand 5 states. [2020-09-24 18:26:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:34,860 INFO L93 Difference]: Finished difference Result 6506 states and 8269 transitions. [2020-09-24 18:26:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:34,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-24 18:26:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:34,885 INFO L225 Difference]: With dead ends: 6506 [2020-09-24 18:26:34,886 INFO L226 Difference]: Without dead ends: 4098 [2020-09-24 18:26:34,895 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 18:26:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-09-24 18:26:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 4048. [2020-09-24 18:26:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4048 states. [2020-09-24 18:26:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5132 transitions. [2020-09-24 18:26:35,006 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5132 transitions. Word has length 187 [2020-09-24 18:26:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:35,006 INFO L479 AbstractCegarLoop]: Abstraction has 4048 states and 5132 transitions. [2020-09-24 18:26:35,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5132 transitions. [2020-09-24 18:26:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-24 18:26:35,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:35,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:26:35,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:35,012 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2065876718, now seen corresponding path program 1 times [2020-09-24 18:26:35,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:35,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14515396] [2020-09-24 18:26:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking...