/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 --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 interpolation-heuristic=FIRST --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/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:31:39,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:31:39,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:31:39,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:31:39,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:31:39,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:31:39,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:31:39,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:31:39,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:31:39,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:31:39,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:31:39,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:31:39,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:31:39,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:31:39,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:31:39,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:31:39,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:31:39,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:31:39,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:31:39,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:31:39,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:31:39,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:31:39,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:31:39,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:31:39,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:31:39,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:31:39,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:31:39,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:31:39,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:31:39,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:31:39,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:31:39,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:31:39,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:31:39,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:31:39,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:31:39,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:31:39,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:31:39,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:31:39,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:31:39,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:31:39,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:31:39,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:31:39,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:31:39,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:31:39,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:31:39,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:31:39,761 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:31:39,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:31:39,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:31:39,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:31:39,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:31:39,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:31:39,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:31:39,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:31:39,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:31:39,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:31:39,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:31:39,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:31:39,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:31:39,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:31:39,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:31:39,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:31:39,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:31:39,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:31:39,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:31:39,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:31:39,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:31:39,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:31:39,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:31:39,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:31:39,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:31:39,766 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:31:40,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:31:40,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:31:40,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:31:40,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:31:40,309 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:31:40,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-21 11:31:40,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31255031f/02b20ecfc24446e2a475f7f03c6a26e6/FLAGb8a247630 [2020-09-21 11:31:41,011 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:31:41,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-21 11:31:41,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31255031f/02b20ecfc24446e2a475f7f03c6a26e6/FLAGb8a247630 [2020-09-21 11:31:41,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31255031f/02b20ecfc24446e2a475f7f03c6a26e6 [2020-09-21 11:31:41,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:31:41,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:31:41,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:41,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:31:41,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:31:41,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8874c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41, skipping insertion in model container [2020-09-21 11:31:41,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:31:41,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:31:41,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:41,614 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:31:41,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:41,654 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:31:41,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41 WrapperNode [2020-09-21 11:31:41,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:41,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:31:41,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:31:41,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:31:41,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (1/1) ... [2020-09-21 11:31:41,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:31:41,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:31:41,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:31:41,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:31:41,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (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 [2020-09-21 11:31:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:31:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:31:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:31:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:31:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:31:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:31:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:31:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:31:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:31:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:31:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:31:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:31:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:31:42,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:31:42,204 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:31:42,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:42 BoogieIcfgContainer [2020-09-21 11:31:42,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:31:42,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:31:42,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:31:42,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:31:42,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:31:41" (1/3) ... [2020-09-21 11:31:42,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba355d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:42, skipping insertion in model container [2020-09-21 11:31:42,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:41" (2/3) ... [2020-09-21 11:31:42,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba355d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:42, skipping insertion in model container [2020-09-21 11:31:42,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:42" (3/3) ... [2020-09-21 11:31:42,238 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-09-21 11:31:42,250 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:31:42,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:31:42,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:31:42,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:31:42,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:31:42,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:31:42,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:31:42,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:31:42,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:31:42,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:31:42,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:31:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-21 11:31:42,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:31:42,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:42,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:42,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:42,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1128800291, now seen corresponding path program 1 times [2020-09-21 11:31:42,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:42,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100364400] [2020-09-21 11:31:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:31:42,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:31:42,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:31:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:42,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:42,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100364400] [2020-09-21 11:31:42,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:42,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:42,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793355988] [2020-09-21 11:31:42,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:42,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:42,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:42,680 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-09-21 11:31:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:42,902 INFO L93 Difference]: Finished difference Result 87 states and 154 transitions. [2020-09-21 11:31:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:42,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:31:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:42,922 INFO L225 Difference]: With dead ends: 87 [2020-09-21 11:31:42,922 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:31:42,929 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 [2020-09-21 11:31:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:31:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-09-21 11:31:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:31:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-09-21 11:31:42,992 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 13 [2020-09-21 11:31:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:42,992 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-09-21 11:31:42,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-09-21 11:31:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:31:42,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:42,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:42,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:31:42,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1106844324, now seen corresponding path program 1 times [2020-09-21 11:31:42,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:42,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168795815] [2020-09-21 11:31:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,027 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:31:43,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:31:43,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:31:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:31:43,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:43,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168795815] [2020-09-21 11:31:43,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:43,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:43,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012515226] [2020-09-21 11:31:43,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:43,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:43,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:43,135 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 5 states. [2020-09-21 11:31:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:43,260 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-09-21 11:31:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:43,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:31:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:43,266 INFO L225 Difference]: With dead ends: 54 [2020-09-21 11:31:43,266 INFO L226 Difference]: Without dead ends: 52 [2020-09-21 11:31:43,267 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 [2020-09-21 11:31:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-21 11:31:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-21 11:31:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-21 11:31:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2020-09-21 11:31:43,283 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 13 [2020-09-21 11:31:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:43,283 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2020-09-21 11:31:43,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2020-09-21 11:31:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:31:43,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:43,285 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:43,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:31:43,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:43,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1247762898, now seen corresponding path program 1 times [2020-09-21 11:31:43,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:43,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120299486] [2020-09-21 11:31:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,333 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,333 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,334 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:31:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:31:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:31:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,385 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,386 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,386 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,386 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:43,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,398 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,398 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,398 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,399 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:43,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:31:43,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:43,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120299486] [2020-09-21 11:31:43,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:43,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:43,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933287352] [2020-09-21 11:31:43,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:43,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:43,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:43,412 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand 5 states. [2020-09-21 11:31:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:43,548 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-09-21 11:31:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:43,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-21 11:31:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:43,551 INFO L225 Difference]: With dead ends: 56 [2020-09-21 11:31:43,551 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 11:31:43,552 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 [2020-09-21 11:31:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 11:31:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 11:31:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 11:31:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-21 11:31:43,565 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 18 [2020-09-21 11:31:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:43,566 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-21 11:31:43,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-21 11:31:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:31:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:43,567 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:43,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:31:43,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2050697988, now seen corresponding path program 1 times [2020-09-21 11:31:43,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:43,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583663685] [2020-09-21 11:31:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,606 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,607 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,607 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:31:43,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:31:43,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:31:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,685 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:43,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:43,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,695 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:43,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:31:43,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:31:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,709 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,709 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:43,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:31:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:31:43,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583663685] [2020-09-21 11:31:43,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:43,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:43,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519882229] [2020-09-21 11:31:43,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:43,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:43,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:43,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:43,721 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 6 states. [2020-09-21 11:31:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:43,884 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-09-21 11:31:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:43,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-21 11:31:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:43,886 INFO L225 Difference]: With dead ends: 60 [2020-09-21 11:31:43,886 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 11:31:43,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 11:31:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-21 11:31:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-21 11:31:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-09-21 11:31:43,900 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 23 [2020-09-21 11:31:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:43,901 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-09-21 11:31:43,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-09-21 11:31:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:31:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:43,903 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] [2020-09-21 11:31:43,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:31:43,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash -35497745, now seen corresponding path program 1 times [2020-09-21 11:31:43,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:43,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354893230] [2020-09-21 11:31:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,932 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,932 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,932 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:31:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:31:43,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 11:31:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,981 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,982 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:43,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,990 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,991 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,991 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,991 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:43,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:43,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:31:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,001 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,002 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,002 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:31:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,013 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,013 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 11:31:44,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354893230] [2020-09-21 11:31:44,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:44,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254361055] [2020-09-21 11:31:44,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:44,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:44,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:44,031 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 5 states. [2020-09-21 11:31:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:44,128 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-09-21 11:31:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:44,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-21 11:31:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:44,130 INFO L225 Difference]: With dead ends: 65 [2020-09-21 11:31:44,130 INFO L226 Difference]: Without dead ends: 63 [2020-09-21 11:31:44,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:44,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-21 11:31:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-21 11:31:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-21 11:31:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-09-21 11:31:44,144 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 28 [2020-09-21 11:31:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:44,144 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-09-21 11:31:44,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-09-21 11:31:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:31:44,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:44,147 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:44,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:31:44,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:44,148 INFO L82 PathProgramCache]: Analyzing trace with hash 663071772, now seen corresponding path program 1 times [2020-09-21 11:31:44,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:44,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110070771] [2020-09-21 11:31:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,183 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,183 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-21 11:31:44,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:31:44,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:31:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:31:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,235 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,235 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,235 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,235 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:44,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:44,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,244 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,245 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,245 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,245 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:31:44,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:31:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:31:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 11:31:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,278 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,278 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,278 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 11:31:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,288 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,289 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:31:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:31:44,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:31:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-21 11:31:44,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110070771] [2020-09-21 11:31:44,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:44,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528457948] [2020-09-21 11:31:44,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:44,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:44,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:44,315 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 6 states. [2020-09-21 11:31:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:44,478 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2020-09-21 11:31:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:44,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-21 11:31:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:44,481 INFO L225 Difference]: With dead ends: 74 [2020-09-21 11:31:44,481 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:31:44,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:31:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-21 11:31:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-21 11:31:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-09-21 11:31:44,496 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 46 [2020-09-21 11:31:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:44,496 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-09-21 11:31:44,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-09-21 11:31:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 11:31:44,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:44,499 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:44,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:31:44,500 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash -801825860, now seen corresponding path program 1 times [2020-09-21 11:31:44,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:44,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515064382] [2020-09-21 11:31:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,571 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,571 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,571 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:31:44,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:31:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:31:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 11:31:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,696 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,697 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,697 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,697 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:44,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,709 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,709 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:31:44,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:31:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,721 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,721 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,721 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:31:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,735 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,735 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,735 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 11:31:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,749 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,749 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:31:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 11:31:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,760 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,760 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,760 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:31:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,770 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,771 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,771 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:31:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,784 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,785 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:31:44,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:31:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,803 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,803 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,803 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:44,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:31:44,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:44,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-21 11:31:44,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515064382] [2020-09-21 11:31:44,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:31:44,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881443232] [2020-09-21 11:31:44,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:44,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:44,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:44,817 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 7 states. [2020-09-21 11:31:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:45,017 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-09-21 11:31:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:45,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-21 11:31:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:45,019 INFO L225 Difference]: With dead ends: 74 [2020-09-21 11:31:45,020 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:31:45,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:31:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-09-21 11:31:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 11:31:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-09-21 11:31:45,031 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 56 [2020-09-21 11:31:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:45,032 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-09-21 11:31:45,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-09-21 11:31:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:31:45,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:45,034 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:45,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:31:45,034 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1730547273, now seen corresponding path program 1 times [2020-09-21 11:31:45,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:45,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082140866] [2020-09-21 11:31:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:31:45,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:31:45,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:31:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 11:31:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,147 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:31:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,155 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:31:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,162 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:31:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,171 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 11:31:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,179 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 11:31:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,188 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:31:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:31:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,204 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,205 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:31:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,212 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,212 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-21 11:31:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,221 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,222 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,222 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:45,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 11:31:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,233 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:45,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-21 11:31:45,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082140866] [2020-09-21 11:31:45,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:45,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:31:45,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791166205] [2020-09-21 11:31:45,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:31:45,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:45,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:31:45,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:45,246 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 8 states. [2020-09-21 11:31:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:45,432 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-21 11:31:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:31:45,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-21 11:31:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:45,433 INFO L225 Difference]: With dead ends: 72 [2020-09-21 11:31:45,434 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:31:45,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:31:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:31:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:31:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:31:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:31:45,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2020-09-21 11:31:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:45,436 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:31:45,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:31:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:31:45,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:31:45,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:31:45,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:31:46,100 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:31:46,100 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:46,100 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:46,101 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:31:46,101 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:31:46,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:46,101 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-21 11:31:46,101 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 11:31:46,102 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-21 11:31:46,102 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-21 11:31:46,102 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,102 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-21 11:31:46,102 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 56) no Hoare annotation was computed. [2020-09-21 11:31:46,102 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 54) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,103 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 54) no Hoare annotation was computed. [2020-09-21 11:31:46,103 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,103 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,103 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-21 11:31:46,103 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-21 11:31:46,103 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 53) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,104 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-21 11:31:46,104 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-21 11:31:46,104 INFO L264 CegarLoopResult]: At program point L45(lines 25 52) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,104 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (< main_~j~0 main_~bufsize~0)) [2020-09-21 11:31:46,104 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (< main_~j~0 main_~bufsize~0)) [2020-09-21 11:31:46,105 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,105 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,105 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,105 INFO L268 CegarLoopResult]: For program point L25(lines 25 52) no Hoare annotation was computed. [2020-09-21 11:31:46,105 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,106 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 56) no Hoare annotation was computed. [2020-09-21 11:31:46,106 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-21 11:31:46,106 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-21 11:31:46,106 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,106 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 56) the Hoare annotation is: true [2020-09-21 11:31:46,106 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,107 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,107 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,107 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,107 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-09-21 11:31:46,107 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-21 11:31:46,107 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-21 11:31:46,108 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 11:31:46,108 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-21 11:31:46,108 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-21 11:31:46,108 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-21 11:31:46,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:31:46 BoogieIcfgContainer [2020-09-21 11:31:46,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:31:46,137 INFO L168 Benchmark]: Toolchain (without parser) took 4813.11 ms. Allocated memory was 136.8 MB in the beginning and 253.2 MB in the end (delta: 116.4 MB). Free memory was 100.6 MB in the beginning and 181.2 MB in the end (delta: -80.6 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:46,138 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:31:46,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.90 ms. Allocated memory is still 136.8 MB. Free memory was 100.0 MB in the beginning and 89.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:46,140 INFO L168 Benchmark]: Boogie Preprocessor took 133.54 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 89.5 MB in the beginning and 177.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:46,141 INFO L168 Benchmark]: RCFGBuilder took 421.27 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 161.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:46,142 INFO L168 Benchmark]: TraceAbstraction took 3906.18 ms. Allocated memory was 199.8 MB in the beginning and 253.2 MB in the end (delta: 53.5 MB). Free memory was 161.0 MB in the beginning and 181.2 MB in the end (delta: -20.3 MB). Peak memory consumption was 126.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:46,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.90 ms. Allocated memory is still 136.8 MB. Free memory was 100.0 MB in the beginning and 89.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.54 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 89.5 MB in the beginning and 177.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.27 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 161.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3906.18 ms. Allocated memory was 199.8 MB in the beginning and 253.2 MB in the end (delta: 53.5 MB). Free memory was 161.0 MB in the beginning and 181.2 MB in the end (delta: -20.3 MB). Peak memory consumption was 126.5 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: 24]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((j + 5 <= bufsize && 0 <= j) && i < len) && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 104 SDslu, 1004 SDs, 0 SdLazy, 519 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 55 PreInvPairs, 76 NumberOfFragments, 356 HoareAnnotationTreeSize, 55 FomulaSimplifications, 444 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 177 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 256 ConstructedInterpolants, 0 QuantifiedInterpolants, 23130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 428/428 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...