/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-04 20:06:00,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-04 20:06:00,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-04 20:06:00,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-04 20:06:00,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-04 20:06:00,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-04 20:06:00,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-04 20:06:00,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-04 20:06:00,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-04 20:06:00,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-04 20:06:00,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-04 20:06:00,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-04 20:06:00,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-04 20:06:00,716 INFO L138 SettingsManager]: * Use SBE=true [2022-04-04 20:06:00,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-04 20:06:00,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-04 20:06:00,720 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-04 20:06:00,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-04 20:06:00,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-04 20:06:00,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-04 20:06:00,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-04 20:06:00,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-04 20:06:00,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-04 20:06:00,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-04 20:06:00,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-04 20:06:00,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-04 20:06:00,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-04 20:06:00,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-04 20:06:00,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-04 20:06:00,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-04 20:06:00,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-04 20:06:00,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-04 20:06:00,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-04 20:06:00,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-04 20:06:00,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-04 20:06:00,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-04 20:06:00,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-04 20:06:00,980 INFO L275 PluginConnector]: CDTParser initialized [2022-04-04 20:06:00,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-04-04 20:06:01,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43cd09df8/60045d48d1544a2e89ade032bb5033a3/FLAG5c420552f [2022-04-04 20:06:01,421 INFO L306 CDTParser]: Found 1 translation units. [2022-04-04 20:06:01,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-04-04 20:06:01,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43cd09df8/60045d48d1544a2e89ade032bb5033a3/FLAG5c420552f [2022-04-04 20:06:01,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43cd09df8/60045d48d1544a2e89ade032bb5033a3 [2022-04-04 20:06:01,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-04 20:06:01,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-04 20:06:01,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-04 20:06:01,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-04 20:06:01,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-04 20:06:01,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eda1e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01, skipping insertion in model container [2022-04-04 20:06:01,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-04 20:06:01,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-04 20:06:01,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c[321,334] [2022-04-04 20:06:01,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-04 20:06:01,667 INFO L203 MainTranslator]: Completed pre-run [2022-04-04 20:06:01,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c[321,334] [2022-04-04 20:06:01,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-04 20:06:01,701 INFO L208 MainTranslator]: Completed translation [2022-04-04 20:06:01,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01 WrapperNode [2022-04-04 20:06:01,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-04 20:06:01,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-04 20:06:01,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-04 20:06:01,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-04 20:06:01,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-04 20:06:01,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-04 20:06:01,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-04 20:06:01,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-04 20:06:01,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (1/1) ... [2022-04-04 20:06:01,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-04 20:06:01,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 20:06:01,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-04 20:06:01,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-04 20:06:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-04 20:06:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-04 20:06:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-04 20:06:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-04 20:06:01,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-04 20:06:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-04 20:06:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-04 20:06:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-04 20:06:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-04 20:06:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-04 20:06:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-04 20:06:01,875 INFO L234 CfgBuilder]: Building ICFG [2022-04-04 20:06:01,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-04 20:06:02,027 INFO L275 CfgBuilder]: Performing block encoding [2022-04-04 20:06:02,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-04 20:06:02,032 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-04-04 20:06:02,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.04 08:06:02 BoogieIcfgContainer [2022-04-04 20:06:02,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-04 20:06:02,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-04 20:06:02,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-04 20:06:02,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-04 20:06:02,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.04 08:06:01" (1/3) ... [2022-04-04 20:06:02,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724a2578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.04 08:06:02, skipping insertion in model container [2022-04-04 20:06:02,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 08:06:01" (2/3) ... [2022-04-04 20:06:02,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724a2578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.04 08:06:02, skipping insertion in model container [2022-04-04 20:06:02,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.04 08:06:02" (3/3) ... [2022-04-04 20:06:02,044 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-2.c [2022-04-04 20:06:02,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-04 20:06:02,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-04 20:06:02,098 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-04 20:06:02,107 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-04 20:06:02,107 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-04 20:06:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-04 20:06:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-04 20:06:02,125 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:06:02,126 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:06:02,126 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:06:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:06:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -531959740, now seen corresponding path program 1 times [2022-04-04 20:06:02,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:06:02,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514862440] [2022-04-04 20:06:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:06:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:06:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:06:02,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514862440] [2022-04-04 20:06:02,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514862440] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 20:06:02,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-04 20:06:02,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-04 20:06:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810407569] [2022-04-04 20:06:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 20:06:02,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-04 20:06:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:06:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-04 20:06:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-04 20:06:02,383 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 20:06:02,438 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2022-04-04 20:06:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-04 20:06:02,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-04 20:06:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 20:06:02,446 INFO L225 Difference]: With dead ends: 50 [2022-04-04 20:06:02,446 INFO L226 Difference]: Without dead ends: 23 [2022-04-04 20:06:02,448 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-04 20:06:02,454 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-04 20:06:02,456 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-04 20:06:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-04 20:06:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-04 20:06:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 20:06:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-04-04 20:06:02,484 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2022-04-04 20:06:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 20:06:02,484 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-04-04 20:06:02,484 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-04-04 20:06:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-04 20:06:02,485 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:06:02,485 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:06:02,485 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-04 20:06:02,486 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:06:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:06:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash -537500866, now seen corresponding path program 1 times [2022-04-04 20:06:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:06:02,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375480383] [2022-04-04 20:06:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:06:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:06:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:06:02,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375480383] [2022-04-04 20:06:02,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375480383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 20:06:02,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-04 20:06:02,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-04 20:06:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899878276] [2022-04-04 20:06:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 20:06:02,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-04 20:06:02,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:06:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-04 20:06:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-04 20:06:02,619 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 20:06:02,667 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2022-04-04 20:06:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-04 20:06:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-04 20:06:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 20:06:02,669 INFO L225 Difference]: With dead ends: 49 [2022-04-04 20:06:02,669 INFO L226 Difference]: Without dead ends: 32 [2022-04-04 20:06:02,673 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-04 20:06:02,674 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-04 20:06:02,676 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 31 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-04 20:06:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-04 20:06:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2022-04-04 20:06:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 20:06:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-04-04 20:06:02,684 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2022-04-04 20:06:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 20:06:02,684 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-04-04 20:06:02,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-04-04 20:06:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-04 20:06:02,685 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:06:02,685 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:06:02,685 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-04 20:06:02,686 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:06:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:06:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash -509289700, now seen corresponding path program 1 times [2022-04-04 20:06:02,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:06:02,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321355300] [2022-04-04 20:06:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:06:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:06:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:06:02,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321355300] [2022-04-04 20:06:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321355300] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 20:06:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146715865] [2022-04-04 20:06:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:02,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:06:02,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 20:06:02,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 20:06:02,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-04 20:06:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-04 20:06:02,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 20:06:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:02,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 20:06:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:02,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146715865] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 20:06:02,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 20:06:02,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-04 20:06:02,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722215599] [2022-04-04 20:06:02,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 20:06:02,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-04 20:06:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:06:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-04 20:06:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-04 20:06:02,985 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 20:06:03,143 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-04-04 20:06:03,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-04 20:06:03,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-04 20:06:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 20:06:03,145 INFO L225 Difference]: With dead ends: 55 [2022-04-04 20:06:03,146 INFO L226 Difference]: Without dead ends: 37 [2022-04-04 20:06:03,147 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-04-04 20:06:03,148 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-04 20:06:03,148 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-04 20:06:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-04 20:06:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-04-04 20:06:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 20:06:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-04-04 20:06:03,154 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 17 [2022-04-04 20:06:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 20:06:03,154 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-04-04 20:06:03,154 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-04-04 20:06:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-04 20:06:03,160 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:06:03,160 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:06:03,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-04 20:06:03,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:06:03,377 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:06:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:06:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1312242250, now seen corresponding path program 2 times [2022-04-04 20:06:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:06:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581494051] [2022-04-04 20:06:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:06:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:06:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:03,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:06:03,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581494051] [2022-04-04 20:06:03,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581494051] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 20:06:03,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557384960] [2022-04-04 20:06:03,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-04 20:06:03,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:06:03,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 20:06:03,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 20:06:03,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-04 20:06:03,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-04 20:06:03,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-04 20:06:03,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-04 20:06:03,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 20:06:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:03,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 20:06:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:03,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557384960] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 20:06:03,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 20:06:03,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-04-04 20:06:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973964352] [2022-04-04 20:06:03,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 20:06:03,800 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-04 20:06:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:06:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-04 20:06:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-04-04 20:06:03,801 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 20:06:04,299 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2022-04-04 20:06:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-04 20:06:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-04 20:06:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 20:06:04,301 INFO L225 Difference]: With dead ends: 73 [2022-04-04 20:06:04,301 INFO L226 Difference]: Without dead ends: 49 [2022-04-04 20:06:04,301 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2022-04-04 20:06:04,302 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-04 20:06:04,303 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 51 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-04 20:06:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-04 20:06:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-04-04 20:06:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 20:06:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-04-04 20:06:04,310 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2022-04-04 20:06:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 20:06:04,310 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-04-04 20:06:04,310 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-04-04 20:06:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-04 20:06:04,315 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:06:04,315 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:06:04,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-04 20:06:04,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-04 20:06:04,529 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:06:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:06:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash -759453590, now seen corresponding path program 3 times [2022-04-04 20:06:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:06:04,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089818854] [2022-04-04 20:06:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:04,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:06:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:06:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:06:04,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089818854] [2022-04-04 20:06:04,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089818854] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 20:06:04,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866615451] [2022-04-04 20:06:04,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-04 20:06:04,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:06:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 20:06:04,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 20:06:04,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-04 20:06:04,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-04-04 20:06:04,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-04 20:06:04,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-04 20:06:04,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 20:06:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:04,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 20:06:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:05,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866615451] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 20:06:05,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 20:06:05,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-04-04 20:06:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29045121] [2022-04-04 20:06:05,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 20:06:05,309 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-04 20:06:05,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:06:05,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-04 20:06:05,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-04-04 20:06:05,311 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 20:06:08,960 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2022-04-04 20:06:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-04 20:06:08,961 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-04-04 20:06:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 20:06:08,962 INFO L225 Difference]: With dead ends: 109 [2022-04-04 20:06:08,962 INFO L226 Difference]: Without dead ends: 73 [2022-04-04 20:06:08,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=643, Invalid=1613, Unknown=0, NotChecked=0, Total=2256 [2022-04-04 20:06:08,964 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 128 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-04 20:06:08,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 81 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-04 20:06:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-04 20:06:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-04-04 20:06:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 20:06:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-04-04 20:06:08,974 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 35 [2022-04-04 20:06:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 20:06:08,974 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-04-04 20:06:08,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:06:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-04-04 20:06:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-04 20:06:08,976 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:06:08,976 INFO L499 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:06:09,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-04 20:06:09,194 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:06:09,194 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:06:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:06:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash -110156846, now seen corresponding path program 4 times [2022-04-04 20:06:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:06:09,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764324254] [2022-04-04 20:06:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:06:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:06:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:06:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:06:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:06:09,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764324254] [2022-04-04 20:06:09,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764324254] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 20:06:09,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006069520] [2022-04-04 20:06:09,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-04 20:06:09,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:06:09,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 20:06:09,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 20:06:09,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-04 20:06:09,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-04 20:06:09,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-04 20:06:09,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 47 conjunts are in the unsatisfiable core [2022-04-04 20:06:09,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 20:06:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:10,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 20:06:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:06:11,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006069520] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 20:06:11,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 20:06:11,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-04-04 20:06:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842660746] [2022-04-04 20:06:11,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 20:06:11,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-04 20:06:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:06:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-04 20:06:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-04-04 20:06:11,103 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:07:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 20:07:55,485 INFO L93 Difference]: Finished difference Result 181 states and 216 transitions. [2022-04-04 20:07:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-04-04 20:07:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-04-04 20:07:55,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 20:07:55,486 INFO L225 Difference]: With dead ends: 181 [2022-04-04 20:07:55,487 INFO L226 Difference]: Without dead ends: 121 [2022-04-04 20:07:55,490 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 104.8s TimeCoverageRelationStatistics Valid=2440, Invalid=6677, Unknown=3, NotChecked=0, Total=9120 [2022-04-04 20:07:55,491 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 221 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-04 20:07:55,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 141 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-04 20:07:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-04-04 20:07:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2022-04-04 20:07:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 20:07:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2022-04-04 20:07:55,503 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 59 [2022-04-04 20:07:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 20:07:55,504 INFO L478 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2022-04-04 20:07:55,504 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:07:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2022-04-04 20:07:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-04 20:07:55,506 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 20:07:55,506 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 20:07:55,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-04 20:07:55,728 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:07:55,729 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 20:07:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 20:07:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1588006238, now seen corresponding path program 5 times [2022-04-04 20:07:55,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 20:07:55,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374157231] [2022-04-04 20:07:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 20:07:55,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 20:07:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:07:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 20:07:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 20:07:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:07:57,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 20:07:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374157231] [2022-04-04 20:07:57,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374157231] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 20:07:57,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50405108] [2022-04-04 20:07:57,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-04 20:07:57,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 20:07:57,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 20:07:57,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 20:07:57,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-04 20:10:13,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-04-04 20:10:13,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-04 20:10:13,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 95 conjunts are in the unsatisfiable core [2022-04-04 20:10:13,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 20:10:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:10:14,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 20:10:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 20:10:18,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50405108] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 20:10:18,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 20:10:18,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-04-04 20:10:18,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172206516] [2022-04-04 20:10:18,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 20:10:18,005 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-04-04 20:10:18,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 20:10:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-04-04 20:10:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-04-04 20:10:18,009 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 20:11:27,391 WARN L232 SmtUtils]: Spent 15.21s on a formula simplification. DAG size of input: 196 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:12:31,550 WARN L232 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 192 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:13:33,734 WARN L232 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 188 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:14:34,902 WARN L232 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 184 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:14:36,917 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-04-04 20:15:35,554 WARN L232 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 172 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:16:32,026 WARN L232 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 176 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:17:25,287 WARN L232 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 172 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:17:27,342 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-04-04 20:18:30,823 WARN L232 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 160 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:19:32,425 WARN L232 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 164 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-04 20:20:38,713 WARN L232 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 160 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)