/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:10:26,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:26,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:26,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:26,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:26,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:26,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:26,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:26,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:26,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:26,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:26,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:26,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:26,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:26,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:26,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:26,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:26,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:26,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:26,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:26,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:26,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:26,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:26,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:26,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:26,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:26,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:26,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:26,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:26,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:26,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:26,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:26,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:26,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:26,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:26,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:26,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:26,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:26,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:26,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:26,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:26,532 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 [2020-09-25 01:10:26,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:26,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:26,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:26,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:26,580 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:26,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:26,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:26,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:26,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:26,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:26,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:26,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:26,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:26,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:26,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:26,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:26,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:26,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:26,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:26,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:26,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:26,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:26,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:26,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:26,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:26,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:26,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:26,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:26,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:26,587 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:10:27,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:27,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:27,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:27,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:27,102 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:27,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 01:10:27,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86dfec954/cfd05a920ce94404ae8d73151f1e9421/FLAGbb7065338 [2020-09-25 01:10:27,747 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:10:27,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 01:10:27,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86dfec954/cfd05a920ce94404ae8d73151f1e9421/FLAGbb7065338 [2020-09-25 01:10:28,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86dfec954/cfd05a920ce94404ae8d73151f1e9421 [2020-09-25 01:10:28,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:10:28,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:10:28,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:28,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:10:28,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:10:28,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df7be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28, skipping insertion in model container [2020-09-25 01:10:28,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:10:28,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:10:28,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:28,382 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:10:28,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:28,425 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:10:28,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28 WrapperNode [2020-09-25 01:10:28,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:28,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:10:28,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:10:28,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:10:28,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (1/1) ... [2020-09-25 01:10:28,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:10:28,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:10:28,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:10:28,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:10:28,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (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 [2020-09-25 01:10:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:10:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:10:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:10:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:10:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:10:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:10:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:10:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:10:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:10:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:10:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:10:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:10:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:10:29,032 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:10:29,033 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 01:10:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:29 BoogieIcfgContainer [2020-09-25 01:10:29,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:10:29,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:10:29,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:10:29,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:10:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:28" (1/3) ... [2020-09-25 01:10:29,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2dd35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:29, skipping insertion in model container [2020-09-25 01:10:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:28" (2/3) ... [2020-09-25 01:10:29,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2dd35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:29, skipping insertion in model container [2020-09-25 01:10:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:29" (3/3) ... [2020-09-25 01:10:29,049 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-25 01:10:29,059 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:10:29,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:10:29,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:10:29,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:10:29,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:10:29,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:10:29,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:10:29,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:10:29,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:10:29,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:10:29,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:10:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 01:10:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 01:10:29,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:29,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:29,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-25 01:10:29,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:29,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497818344] [2020-09-25 01:10:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:29,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:29,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:10:29,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:29,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 01:10:29,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:10:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:10:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:29,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:29,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:29,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497818344] [2020-09-25 01:10:29,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:29,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 01:10:29,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080963820] [2020-09-25 01:10:29,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 01:10:29,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 01:10:29,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 01:10:29,566 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-09-25 01:10:29,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:29,615 INFO L93 Difference]: Finished difference Result 134 states and 203 transitions. [2020-09-25 01:10:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 01:10:29,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-09-25 01:10:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:29,629 INFO L225 Difference]: With dead ends: 134 [2020-09-25 01:10:29,629 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 01:10:29,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 01:10:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 01:10:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-25 01:10:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 01:10:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-09-25 01:10:29,699 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 19 [2020-09-25 01:10:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:29,699 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-09-25 01:10:29,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 01:10:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-09-25 01:10:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 01:10:29,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:29,701 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] [2020-09-25 01:10:29,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:10:29,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:29,703 INFO L82 PathProgramCache]: Analyzing trace with hash 471335344, now seen corresponding path program 1 times [2020-09-25 01:10:29,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:29,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330844792] [2020-09-25 01:10:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:29,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:10:29,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 01:10:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 01:10:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 01:10:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:30,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:30,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:30,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:30,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:30,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330844792] [2020-09-25 01:10:30,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:30,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:30,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691064533] [2020-09-25 01:10:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:30,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:30,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:30,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:30,024 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 5 states. [2020-09-25 01:10:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:30,202 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2020-09-25 01:10:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:10:30,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-25 01:10:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:30,207 INFO L225 Difference]: With dead ends: 91 [2020-09-25 01:10:30,209 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 01:10:30,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 01:10:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-25 01:10:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 01:10:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2020-09-25 01:10:30,240 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 20 [2020-09-25 01:10:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:30,241 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2020-09-25 01:10:30,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2020-09-25 01:10:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 01:10:30,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:30,243 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:30,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:10:30,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-25 01:10:30,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:30,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954500007] [2020-09-25 01:10:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:30,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 01:10:30,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 01:10:30,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:10:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 01:10:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:30,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:30,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 01:10:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:30,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:30,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:30,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 01:10:30,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:30,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:30,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954500007] [2020-09-25 01:10:30,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:30,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:30,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556401526] [2020-09-25 01:10:30,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:30,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:30,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:30,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:30,589 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand 5 states. [2020-09-25 01:10:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:30,713 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-09-25 01:10:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:10:30,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 01:10:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:30,721 INFO L225 Difference]: With dead ends: 88 [2020-09-25 01:10:30,721 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 01:10:30,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 01:10:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 01:10:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 01:10:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-09-25 01:10:30,754 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 25 [2020-09-25 01:10:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:30,754 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-09-25 01:10:30,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-09-25 01:10:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 01:10:30,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:30,759 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:10:30,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:10:30,759 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:30,762 INFO L82 PathProgramCache]: Analyzing trace with hash 344115466, now seen corresponding path program 1 times [2020-09-25 01:10:30,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:30,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082047645] [2020-09-25 01:10:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:30,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:10:30,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 01:10:30,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:10:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:10:30,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:10:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:31,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:31,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:10:31,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:31,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082047645] [2020-09-25 01:10:31,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:31,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 01:10:31,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575328929] [2020-09-25 01:10:31,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:10:31,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:31,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:10:31,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:10:31,028 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 7 states. [2020-09-25 01:10:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:31,219 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-09-25 01:10:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:10:31,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 01:10:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:31,221 INFO L225 Difference]: With dead ends: 90 [2020-09-25 01:10:31,222 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 01:10:31,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 01:10:31,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 01:10:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 01:10:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-09-25 01:10:31,233 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 28 [2020-09-25 01:10:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:31,234 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-09-25 01:10:31,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:10:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-09-25 01:10:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 01:10:31,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:31,236 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:10:31,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:10:31,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:31,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1469174755, now seen corresponding path program 1 times [2020-09-25 01:10:31,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:31,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847586526] [2020-09-25 01:10:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:31,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:32,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:32,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:10:32,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:10:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-09-25 01:10:32,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:10:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:10:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:10:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:32,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:32,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:32,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:32,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:32,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:32,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:10:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:32,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:32,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:32,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:32,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:32,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:32,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:32,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:32,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:10:32,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 01:10:32,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847586526] [2020-09-25 01:10:32,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:32,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 01:10:32,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343581949] [2020-09-25 01:10:32,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:10:32,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:32,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:10:32,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:10:32,944 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-09-25 01:10:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:33,218 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2020-09-25 01:10:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:10:33,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 01:10:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:33,220 INFO L225 Difference]: With dead ends: 88 [2020-09-25 01:10:33,220 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 01:10:33,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 01:10:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 01:10:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 01:10:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-09-25 01:10:33,245 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 38 [2020-09-25 01:10:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:33,245 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-09-25 01:10:33,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:10:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-09-25 01:10:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 01:10:33,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:33,247 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:10:33,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:10:33,249 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash 859677550, now seen corresponding path program 1 times [2020-09-25 01:10:33,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:33,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453768219] [2020-09-25 01:10:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 01:10:33,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 01:10:33,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:10:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:10:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:10:33,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:33,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:33,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:33,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:33,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:33,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:10:33,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453768219] [2020-09-25 01:10:33,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:33,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 01:10:33,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222637065] [2020-09-25 01:10:33,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:10:33,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:33,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:10:33,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:10:33,671 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 7 states. [2020-09-25 01:10:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:33,835 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2020-09-25 01:10:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:10:33,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-25 01:10:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:33,837 INFO L225 Difference]: With dead ends: 85 [2020-09-25 01:10:33,838 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 01:10:33,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 01:10:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-25 01:10:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 01:10:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2020-09-25 01:10:33,860 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 41 [2020-09-25 01:10:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:33,861 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2020-09-25 01:10:33,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:10:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2020-09-25 01:10:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 01:10:33,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:33,865 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:33,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:10:33,865 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash -943144682, now seen corresponding path program 1 times [2020-09-25 01:10:33,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:33,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029274491] [2020-09-25 01:10:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:34,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 01:10:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 01:10:34,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:10:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:10:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 01:10:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:34,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:34,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:34,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:34,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:34,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:34,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:34,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:34,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:10:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:10:34,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029274491] [2020-09-25 01:10:34,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:34,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 01:10:34,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433779601] [2020-09-25 01:10:34,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:10:34,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:10:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:10:34,329 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand 7 states. [2020-09-25 01:10:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:34,529 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2020-09-25 01:10:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:10:34,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-25 01:10:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:34,532 INFO L225 Difference]: With dead ends: 104 [2020-09-25 01:10:34,532 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 01:10:34,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 01:10:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-09-25 01:10:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 01:10:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2020-09-25 01:10:34,560 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 44 [2020-09-25 01:10:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:34,560 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2020-09-25 01:10:34,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:10:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2020-09-25 01:10:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 01:10:34,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:34,567 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-09-25 01:10:34,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:10:34,568 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:34,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:34,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 2 times [2020-09-25 01:10:34,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:34,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5095150] [2020-09-25 01:10:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:35,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:35,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 01:10:35,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-09-25 01:10:35,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 01:10:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:10:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 01:10:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:35,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:35,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:35,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:35,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:35,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:35,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:35,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 01:10:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:35,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:35,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:35,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:35,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 01:10:35,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5095150] [2020-09-25 01:10:35,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:35,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 01:10:35,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335476692] [2020-09-25 01:10:35,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:10:35,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:10:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:10:35,416 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand 10 states. [2020-09-25 01:10:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:35,665 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2020-09-25 01:10:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:10:35,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 01:10:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:35,667 INFO L225 Difference]: With dead ends: 106 [2020-09-25 01:10:35,667 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 01:10:35,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:10:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 01:10:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-09-25 01:10:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 01:10:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2020-09-25 01:10:35,676 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 46 [2020-09-25 01:10:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:35,677 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2020-09-25 01:10:35,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:10:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2020-09-25 01:10:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 01:10:35,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:35,678 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:35,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 01:10:35,679 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:35,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-25 01:10:35,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:35,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937674809] [2020-09-25 01:10:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:36,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:10:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-09-25 01:10:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 01:10:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:10:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 01:10:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:36,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:36,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:36,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:36,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:36,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:36,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:36,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:36,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:36,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:36,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:10:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:10:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:36,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:36,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:36,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:36,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:36,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:36,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 01:10:36,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937674809] [2020-09-25 01:10:36,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:36,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 01:10:36,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522116663] [2020-09-25 01:10:36,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:10:36,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:36,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:10:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:10:36,761 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand 10 states. [2020-09-25 01:10:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:36,991 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-09-25 01:10:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:10:36,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-09-25 01:10:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:36,993 INFO L225 Difference]: With dead ends: 107 [2020-09-25 01:10:36,993 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 01:10:36,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:10:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 01:10:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 01:10:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 01:10:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2020-09-25 01:10:37,002 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 49 [2020-09-25 01:10:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:37,003 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2020-09-25 01:10:37,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:10:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2020-09-25 01:10:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 01:10:37,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:37,004 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:37,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 01:10:37,005 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:37,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-25 01:10:37,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:37,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056708124] [2020-09-25 01:10:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 01:10:38,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-09-25 01:10:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:10:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 01:10:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:10:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:38,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:10:38,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:38,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:10:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:38,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:10:38,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 01:10:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:38,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:10:38,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 01:10:38,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056708124] [2020-09-25 01:10:38,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:38,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:10:38,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433086842] [2020-09-25 01:10:38,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:10:38,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:38,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:10:38,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:38,378 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 8 states. [2020-09-25 01:10:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:38,560 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-09-25 01:10:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:10:38,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-25 01:10:38,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:38,564 INFO L225 Difference]: With dead ends: 110 [2020-09-25 01:10:38,564 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 01:10:38,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:10:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 01:10:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-09-25 01:10:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 01:10:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2020-09-25 01:10:38,576 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 58 [2020-09-25 01:10:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:38,577 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2020-09-25 01:10:38,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:10:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2020-09-25 01:10:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 01:10:38,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:38,580 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:38,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 01:10:38,580 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-25 01:10:38,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:38,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354008412] [2020-09-25 01:10:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:38,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 01:10:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 01:10:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 01:10:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:10:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 01:10:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:43,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:43,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:43,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:43,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:43,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:43,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:10:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 01:10:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:43,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:43,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 01:10:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:43,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:10:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 01:10:43,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354008412] [2020-09-25 01:10:43,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:43,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 01:10:43,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576011223] [2020-09-25 01:10:43,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:10:43,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:43,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:10:43,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:10:43,768 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand 10 states. [2020-09-25 01:10:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:44,004 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2020-09-25 01:10:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:10:44,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 01:10:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:44,006 INFO L225 Difference]: With dead ends: 110 [2020-09-25 01:10:44,006 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 01:10:44,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:10:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 01:10:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-25 01:10:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 01:10:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2020-09-25 01:10:44,015 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 63 [2020-09-25 01:10:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:44,016 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2020-09-25 01:10:44,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:10:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2020-09-25 01:10:44,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 01:10:44,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:44,017 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:44,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 01:10:44,017 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:44,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:44,018 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-25 01:10:44,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:44,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045098366] [2020-09-25 01:10:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:45,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 01:10:45,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-09-25 01:10:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:10:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 01:10:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 01:10:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:45,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:45,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:45,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:45,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:45,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:45,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:45,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:45,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:45,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:45,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:45,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:45,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:10:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:45,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:45,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:45,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 01:10:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:45,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 01:10:45,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045098366] [2020-09-25 01:10:45,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:45,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:10:45,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101943118] [2020-09-25 01:10:45,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:10:45,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:45,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:10:45,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:45,433 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand 9 states. [2020-09-25 01:10:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:45,660 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2020-09-25 01:10:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:10:45,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 01:10:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:45,662 INFO L225 Difference]: With dead ends: 118 [2020-09-25 01:10:45,662 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 01:10:45,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:10:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 01:10:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2020-09-25 01:10:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 01:10:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2020-09-25 01:10:45,671 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 65 [2020-09-25 01:10:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:45,671 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2020-09-25 01:10:45,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:10:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2020-09-25 01:10:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 01:10:45,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:45,673 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:45,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 01:10:45,673 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:45,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:45,673 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-25 01:10:45,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:45,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970218024] [2020-09-25 01:10:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 01:10:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4824 [2020-09-25 01:10:50,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 01:10:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:10:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 01:10:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:10:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:10:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:50,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:10:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:50,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:10:50,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:10:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:50,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:10:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 01:10:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:50,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:10:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 01:10:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:10:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:10:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 01:10:50,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970218024] [2020-09-25 01:10:50,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:50,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:10:50,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398359384] [2020-09-25 01:10:50,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:10:50,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:10:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:50,707 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand 9 states. [2020-09-25 01:10:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:50,943 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2020-09-25 01:10:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:10:50,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-25 01:10:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:50,945 INFO L225 Difference]: With dead ends: 112 [2020-09-25 01:10:50,945 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:10:50,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:10:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:10:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:10:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:10:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:10:50,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-09-25 01:10:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:50,951 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:10:50,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:10:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:10:50,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:10:50,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 01:10:50,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:10:51,362 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 01:10:51,362 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:51,362 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:51,363 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:10:51,363 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:10:51,363 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:51,363 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:10:51,363 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:10:51,363 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 01:10:51,364 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 01:10:51,365 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:10:51,365 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 01:10:51,365 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 01:10:51,365 INFO L268 CegarLoopResult]: For program point L60-1(line 60) no Hoare annotation was computed. [2020-09-25 01:10:51,365 INFO L268 CegarLoopResult]: For program point L27-1(lines 27 29) no Hoare annotation was computed. [2020-09-25 01:10:51,365 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 66) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point L44-1(lines 44 53) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point L44-2(line 44) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-25 01:10:51,366 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 01:10:51,367 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-25 01:10:51,367 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 01:10:51,367 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 01:10:51,367 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 01:10:51,367 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,368 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,368 INFO L264 CegarLoopResult]: At program point L37-2(lines 37 61) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-25 01:10:51,368 INFO L264 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,368 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,368 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 33) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-25 01:10:51,368 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 33) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2020-09-25 01:10:51,369 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 01:10:51,369 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 66) no Hoare annotation was computed. [2020-09-25 01:10:51,369 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-25 01:10:51,369 INFO L271 CegarLoopResult]: At program point L63(lines 14 66) the Hoare annotation is: true [2020-09-25 01:10:51,370 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2020-09-25 01:10:51,370 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 66) the Hoare annotation is: true [2020-09-25 01:10:51,370 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,370 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 01:10:51,371 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-09-25 01:10:51,371 INFO L268 CegarLoopResult]: For program point L55-1(lines 55 57) no Hoare annotation was computed. [2020-09-25 01:10:51,371 INFO L268 CegarLoopResult]: For program point L55-2(line 55) no Hoare annotation was computed. [2020-09-25 01:10:51,371 INFO L268 CegarLoopResult]: For program point L55-3(line 55) no Hoare annotation was computed. [2020-09-25 01:10:51,371 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 01:10:51,371 INFO L268 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-09-25 01:10:51,372 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-25 01:10:51,372 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (<= main_~t~0 main_~tagbuf_len~0) [2020-09-25 01:10:51,372 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 01:10:51,372 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-25 01:10:51,372 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (<= main_~t~0 main_~tagbuf_len~0) [2020-09-25 01:10:51,372 INFO L268 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-09-25 01:10:51,372 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 01:10:51,373 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 01:10:51,373 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-25 01:10:51,373 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 01:10:51,374 INFO L264 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (<= main_~t~0 main_~tagbuf_len~0) [2020-09-25 01:10:51,374 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2020-09-25 01:10:51,374 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 01:10:51,374 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 01:10:51,375 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 01:10:51,375 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,375 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-25 01:10:51,375 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 01:10:51,375 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 01:10:51,375 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 01:10:51,376 INFO L268 CegarLoopResult]: For program point L43-1(lines 43 57) no Hoare annotation was computed. [2020-09-25 01:10:51,376 INFO L268 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-09-25 01:10:51,376 INFO L268 CegarLoopResult]: For program point L43-3(line 43) no Hoare annotation was computed. [2020-09-25 01:10:51,377 INFO L264 CegarLoopResult]: At program point L43-4(lines 43 57) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-25 01:10:51,377 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 01:10:51,377 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 01:10:51,377 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:10:51,377 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 01:10:51,377 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 01:10:51,377 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:10:51,378 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 01:10:51,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:10:51 BoogieIcfgContainer [2020-09-25 01:10:51,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:10:51,407 INFO L168 Benchmark]: Toolchain (without parser) took 23312.87 ms. Allocated memory was 146.3 MB in the beginning and 359.1 MB in the end (delta: 212.9 MB). Free memory was 101.4 MB in the beginning and 92.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:51,409 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-25 01:10:51,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.40 ms. Allocated memory is still 146.3 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:51,411 INFO L168 Benchmark]: Boogie Preprocessor took 130.73 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 90.8 MB in the beginning and 180.9 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:51,416 INFO L168 Benchmark]: RCFGBuilder took 480.72 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 162.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:51,422 INFO L168 Benchmark]: TraceAbstraction took 22363.19 ms. Allocated memory was 202.4 MB in the beginning and 359.1 MB in the end (delta: 156.8 MB). Free memory was 161.7 MB in the beginning and 92.5 MB in the end (delta: 69.2 MB). Peak memory consumption was 225.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:51,428 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.40 ms. Allocated memory is still 146.3 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.73 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 90.8 MB in the beginning and 180.9 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.72 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 162.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22363.19 ms. Allocated memory was 202.4 MB in the beginning and 359.1 MB in the end (delta: 156.8 MB). Free memory was 161.7 MB in the beginning and 92.5 MB in the end (delta: 69.2 MB). Peak memory consumption was 225.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 <= t && t <= tagbuf_len - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 <= t && t <= tagbuf_len - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.8s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 927 SDtfs, 382 SDslu, 3665 SDs, 0 SdLazy, 1830 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 66 PreInvPairs, 98 NumberOfFragments, 146 HoareAnnotationTreeSize, 66 FomulaSimplifications, 200 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 260 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.4s InterpolantComputationTime, 566 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 53196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 215/262 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...