/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/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:31:32,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:31:32,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:31:32,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:31:32,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:31:32,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:31:32,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:31:32,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:31:32,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:31:32,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:31:32,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:31:32,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:31:32,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:31:32,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:31:32,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:31:32,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:31:32,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:31:32,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:31:32,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:31:32,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:31:32,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:31:32,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:31:32,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:31:32,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:31:32,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:31:32,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:31:32,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:31:32,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:31:32,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:31:32,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:31:32,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:31:32,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:31:32,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:31:32,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:31:32,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:31:32,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:31:32,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:31:32,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:31:32,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:31:32,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:31:32,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:31:32,464 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 21:31:32,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:31:32,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:31:32,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:31:32,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:31:32,517 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:31:32,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:31:32,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:31:32,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:31:32,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:31:32,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:31:32,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:31:32,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:31:32,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:31:32,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:31:32,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:31:32,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:31:32,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:31:32,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:31:32,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:31:32,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:31:32,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:31:32,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:31:32,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:31:32,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:31:32,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:31:32,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:31:32,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:31:32,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:31:32,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:31:32,522 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 21:31:32,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:31:32,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:31:32,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:31:32,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:31:32,999 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:31:33,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-24 21:31:33,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1611f8804/9f78f5a4f9b04c9f98158975d62022c7/FLAG229a13b44 [2020-09-24 21:31:33,539 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:31:33,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-24 21:31:33,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1611f8804/9f78f5a4f9b04c9f98158975d62022c7/FLAG229a13b44 [2020-09-24 21:31:33,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1611f8804/9f78f5a4f9b04c9f98158975d62022c7 [2020-09-24 21:31:33,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:31:33,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:31:33,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:31:33,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:31:33,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:31:33,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:31:33" (1/1) ... [2020-09-24 21:31:33,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:33, skipping insertion in model container [2020-09-24 21:31:33,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:31:33" (1/1) ... [2020-09-24 21:31:33,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:31:33,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:31:34,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:31:34,247 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:31:34,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:31:34,280 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:31:34,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34 WrapperNode [2020-09-24 21:31:34,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:31:34,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:31:34,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:31:34,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:31:34,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (1/1) ... [2020-09-24 21:31:34,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:31:34,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:31:34,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:31:34,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:31:34,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (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 21:31:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:31:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:31:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-24 21:31:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-24 21:31:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:31:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:31:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:31:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-24 21:31:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-24 21:31:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:31:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:31:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:31:34,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:31:34,747 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:31:34,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:31:34 BoogieIcfgContainer [2020-09-24 21:31:34,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:31:34,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:31:34,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:31:34,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:31:34,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:31:33" (1/3) ... [2020-09-24 21:31:34,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d78f96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:31:34, skipping insertion in model container [2020-09-24 21:31:34,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:34" (2/3) ... [2020-09-24 21:31:34,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d78f96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:31:34, skipping insertion in model container [2020-09-24 21:31:34,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:31:34" (3/3) ... [2020-09-24 21:31:34,778 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-24 21:31:34,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:31:34,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:31:34,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:31:34,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:31:34,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:31:34,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:31:34,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:31:34,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:31:34,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:31:34,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:31:34,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:31:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 21:31:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 21:31:34,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:34,879 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] [2020-09-24 21:31:34,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:34,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-24 21:31:34,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:34,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325169019] [2020-09-24 21:31:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:31:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:31:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-24 21:31:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:31:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:31:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:31:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:31:35,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:35,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:35,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:31:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:35,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:31:35,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:31:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 21:31:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:31:35,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:31:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:31:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:35,781 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 21:31:35,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325169019] [2020-09-24 21:31:35,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:35,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:31:35,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325943898] [2020-09-24 21:31:35,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:31:35,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:35,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:31:35,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:31:35,815 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-09-24 21:31:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:36,059 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-09-24 21:31:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:31:36,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 21:31:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:36,077 INFO L225 Difference]: With dead ends: 70 [2020-09-24 21:31:36,077 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 21:31:36,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:31:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 21:31:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-24 21:31:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 21:31:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-24 21:31:36,147 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 29 [2020-09-24 21:31:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:36,148 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-24 21:31:36,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:31:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-24 21:31:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 21:31:36,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:36,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:31:36,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:31:36,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:36,154 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-24 21:31:36,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:36,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860075754] [2020-09-24 21:31:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:36,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:36,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:31:36,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-24 21:31:36,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:31:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:31:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:31:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:36,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:36,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:31:36,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:36,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:31:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:36,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:36,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:31:36,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:36,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 21:31:36,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:31:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 21:31:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:36,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:36,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:36,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:31:36,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:31:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:31:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:36,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:31:36,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:31:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:31:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:31:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:31:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:31:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 21:31:37,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860075754] [2020-09-24 21:31:37,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:37,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:31:37,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519266518] [2020-09-24 21:31:37,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:31:37,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:37,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:31:37,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:31:37,017 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-24 21:31:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:37,714 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-24 21:31:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:31:37,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-24 21:31:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:37,720 INFO L225 Difference]: With dead ends: 93 [2020-09-24 21:31:37,720 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 21:31:37,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:31:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 21:31:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-24 21:31:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 21:31:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-24 21:31:37,742 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-24 21:31:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:37,742 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-24 21:31:37,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:31:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-24 21:31:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:31:37,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:37,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:31:37,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:31:37,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:37,747 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-24 21:31:37,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:37,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24659484] [2020-09-24 21:31:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:39,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 21:31:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:31:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2189 [2020-09-24 21:31:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:31:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:31:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:31:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:39,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:39,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:31:40,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:40,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:31:40,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:40,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:31:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:40,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:31:40,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:31:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 21:31:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:31:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:31:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:40,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:40,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:31:40,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:31:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:31:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:40,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:31:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:40,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:40,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:31:40,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:31:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:31:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:31:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:40,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 21:31:40,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:31:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 21:31:40,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:31:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:31:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:40,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:40,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:31:40,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:40,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:31:40,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:31:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:31:40,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:31:40,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24659484] [2020-09-24 21:31:40,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:40,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:31:40,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261100592] [2020-09-24 21:31:40,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:31:40,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:40,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:31:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:31:40,629 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 9 states. [2020-09-24 21:31:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:40,942 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2020-09-24 21:31:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:31:40,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-24 21:31:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:40,945 INFO L225 Difference]: With dead ends: 129 [2020-09-24 21:31:40,945 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 21:31:40,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:31:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 21:31:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-24 21:31:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 21:31:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-09-24 21:31:40,961 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 56 [2020-09-24 21:31:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:40,961 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-09-24 21:31:40,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:31:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-09-24 21:31:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 21:31:40,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:40,964 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 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] [2020-09-24 21:31:40,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:31:40,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:40,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-24 21:31:40,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:40,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728711081] [2020-09-24 21:31:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:45,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:45,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 21:31:45,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 21:31:45,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:31:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:31:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:31:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:46,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:46,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:31:46,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:46,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:31:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 21:31:48,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2261 [2020-09-24 21:31:48,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:31:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 21:31:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:48,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:31:48,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:31:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-24 21:31:48,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:31:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:31:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:48,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:31:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:31:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:31:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:31:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:48,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:48,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:31:48,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:31:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:31:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 21:31:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:31:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:31:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:31:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 21:31:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:48,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:48,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:31:48,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:48,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:31:48,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:48,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:31:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 21:31:48,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728711081] [2020-09-24 21:31:48,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:48,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:31:48,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684684635] [2020-09-24 21:31:48,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:31:48,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:31:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:31:49,000 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 10 states. [2020-09-24 21:31:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:49,316 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2020-09-24 21:31:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:31:49,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-24 21:31:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:49,318 INFO L225 Difference]: With dead ends: 113 [2020-09-24 21:31:49,319 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 21:31:49,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:31:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 21:31:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-09-24 21:31:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 21:31:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-24 21:31:49,330 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 67 [2020-09-24 21:31:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:49,330 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-24 21:31:49,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:31:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-24 21:31:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 21:31:49,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:49,334 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:31:49,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:31:49,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:49,335 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-24 21:31:49,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:49,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980031267] [2020-09-24 21:31:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:50,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:31:50,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-09-24 21:31:50,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 21:31:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:31:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-24 21:31:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:50,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:31:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:31:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:31:51,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-24 21:31:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 21:31:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 21:31:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:31:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 21:31:51,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:31:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 21:31:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:51,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:31:51,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:31:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:31:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:51,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:31:51,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:31:51,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 21:31:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 21:31:51,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:31:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 21:31:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:31:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:51,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:31:51,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:31:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:31:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:31:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:31:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:31:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:31:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 21:31:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 21:31:51,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 21:31:51,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:31:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:31:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:31:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:51,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:51,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:31:51,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:31:51,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:31:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-24 21:31:51,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980031267] [2020-09-24 21:31:51,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:51,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:31:51,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190108259] [2020-09-24 21:31:51,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:31:51,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:51,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:31:51,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:31:51,847 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 17 states. [2020-09-24 21:31:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:52,667 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-24 21:31:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:31:52,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-09-24 21:31:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:52,670 INFO L225 Difference]: With dead ends: 102 [2020-09-24 21:31:52,670 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:31:52,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 21:31:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:31:52,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-24 21:31:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 21:31:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-24 21:31:52,691 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-24 21:31:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:52,692 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-24 21:31:52,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:31:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-24 21:31:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 21:31:52,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:52,699 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-24 21:31:52,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:31:52,699 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:52,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:52,700 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-24 21:31:52,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:52,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087015892] [2020-09-24 21:31:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:57,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 21:31:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:31:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:31:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:31:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 21:31:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 21:31:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:57,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:31:57,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:57,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:31:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:32:02,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:02,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:32:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:32:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 21:32:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:32:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:03,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:03,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:03,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:32:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:32:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:03,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:32:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:03,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 21:32:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:32:08,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:32:08,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:32:08,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:32:08,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-24 21:32:08,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:32:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:08,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:08,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:32:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:08,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:32:08,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 21:32:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:32:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:32:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 21:32:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:08,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:08,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:32:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:08,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:08,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 21:32:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 21:32:08,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:32:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:32:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:08,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 76 proven. 170 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-09-24 21:32:08,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087015892] [2020-09-24 21:32:08,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:08,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:32:08,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044131202] [2020-09-24 21:32:08,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:32:08,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:32:08,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:08,919 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 10 states. [2020-09-24 21:32:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:09,290 INFO L93 Difference]: Finished difference Result 154 states and 191 transitions. [2020-09-24 21:32:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:32:09,291 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-09-24 21:32:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:09,293 INFO L225 Difference]: With dead ends: 154 [2020-09-24 21:32:09,293 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 21:32:09,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:32:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 21:32:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-09-24 21:32:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 21:32:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-09-24 21:32:09,323 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 132 [2020-09-24 21:32:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:09,324 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-09-24 21:32:09,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:32:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-09-24 21:32:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 21:32:09,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:09,327 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:09,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:09,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:09,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1860925472, now seen corresponding path program 4 times [2020-09-24 21:32:09,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:09,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958022573] [2020-09-24 21:32:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 21:32:14,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:32:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:14,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:32:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:32:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 21:32:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:32:14,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:14,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:32:19,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:19,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:32:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:32:19,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 21:32:19,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:32:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:32:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:32:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:32:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:19,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 21:32:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:32:19,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:32:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 21:32:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:32:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:19,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:32:19,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:19,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:32:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:32:19,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:19,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 21:32:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:32:19,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 21:32:19,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 21:32:19,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:32:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 21:32:20,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:20,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 21:32:20,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:20,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:32:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:20,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:20,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:20,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 14 proven. 88 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 21:32:20,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958022573] [2020-09-24 21:32:20,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:20,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:32:20,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717294930] [2020-09-24 21:32:20,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:32:20,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:32:20,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:20,155 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 12 states. [2020-09-24 21:32:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:20,626 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2020-09-24 21:32:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:32:20,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-09-24 21:32:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:20,628 INFO L225 Difference]: With dead ends: 124 [2020-09-24 21:32:20,629 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 21:32:20,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:32:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 21:32:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2020-09-24 21:32:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 21:32:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-09-24 21:32:20,639 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 102 [2020-09-24 21:32:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:20,639 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-09-24 21:32:20,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:32:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-09-24 21:32:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 21:32:20,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:20,642 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2020-09-24 21:32:20,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:20,642 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash 680960790, now seen corresponding path program 5 times [2020-09-24 21:32:20,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:20,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450684534] [2020-09-24 21:32:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking...