/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 16:01:34,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 16:01:34,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 16:01:34,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-23 16:01:34,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 16:01:34,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 16:01:34,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 16:01:34,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 16:01:34,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 16:01:34,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 16:01:34,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 16:01:34,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 16:01:34,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 16:01:34,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 16:01:34,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 16:01:34,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 16:01:34,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 16:01:34,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 16:01:34,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 16:01:34,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 16:01:34,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 16:01:34,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 16:01:34,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 16:01:34,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 16:01:34,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 16:01:34,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 16:01:34,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:01:34,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 16:01:34,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 16:01:34,626 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 16:01:34,626 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 16:01:34,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 16:01:34,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 16:01:34,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 16:01:34,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 16:01:34,824 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 16:01:34,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-02-23 16:01:34,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587b9470c/5938503faa654504809d2b813ac0525b/FLAG4a95903da [2022-02-23 16:01:35,220 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 16:01:35,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-02-23 16:01:35,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587b9470c/5938503faa654504809d2b813ac0525b/FLAG4a95903da [2022-02-23 16:01:35,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587b9470c/5938503faa654504809d2b813ac0525b [2022-02-23 16:01:35,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 16:01:35,245 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 16:01:35,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 16:01:35,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 16:01:35,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 16:01:35,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f48e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35, skipping insertion in model container [2022-02-23 16:01:35,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 16:01:35,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 16:01:35,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c[325,338] [2022-02-23 16:01:35,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:01:35,453 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 16:01:35,461 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c[325,338] [2022-02-23 16:01:35,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:01:35,477 INFO L208 MainTranslator]: Completed translation [2022-02-23 16:01:35,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35 WrapperNode [2022-02-23 16:01:35,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 16:01:35,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 16:01:35,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 16:01:35,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 16:01:35,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 16:01:35,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 16:01:35,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 16:01:35,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 16:01:35,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:01:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:01:35,526 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) [2022-02-23 16:01:35,527 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 [2022-02-23 16:01:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 16:01:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 16:01:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 16:01:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 16:01:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-02-23 16:01:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 16:01:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 16:01:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 16:01:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 16:01:35,620 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 16:01:35,621 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 16:01:35,687 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 16:01:35,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 16:01:35,691 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 16:01:35,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:01:35 BoogieIcfgContainer [2022-02-23 16:01:35,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 16:01:35,693 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 16:01:35,693 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 16:01:35,693 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 16:01:35,696 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:01:35" (1/1) ... [2022-02-23 16:01:35,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:01:35 BasicIcfg [2022-02-23 16:01:35,705 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 16:01:35,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 16:01:35,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 16:01:35,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 16:01:35,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:01:35" (1/4) ... [2022-02-23 16:01:35,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa163bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:01:35, skipping insertion in model container [2022-02-23 16:01:35,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:01:35" (2/4) ... [2022-02-23 16:01:35,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa163bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:01:35, skipping insertion in model container [2022-02-23 16:01:35,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:01:35" (3/4) ... [2022-02-23 16:01:35,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa163bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:01:35, skipping insertion in model container [2022-02-23 16:01:35,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:01:35" (4/4) ... [2022-02-23 16:01:35,709 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.cJordan [2022-02-23 16:01:35,713 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 16:01:35,713 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 16:01:35,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 16:01:35,742 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 16:01:35,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 16:01:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 16:01:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 16:01:35,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:01:35,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:01:35,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:01:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:01:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1565505021, now seen corresponding path program 1 times [2022-02-23 16:01:35,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:01:35,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239727716] [2022-02-23 16:01:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:01:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:01:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:01:35,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:01:35,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239727716] [2022-02-23 16:01:35,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239727716] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:01:35,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:01:35,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 16:01:35,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969411632] [2022-02-23 16:01:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:01:35,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 16:01:35,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:01:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 16:01:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 16:01:35,901 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-02-23 16:01:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:01:35,947 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-02-23 16:01:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 16:01:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-02-23 16:01:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:01:35,965 INFO L225 Difference]: With dead ends: 23 [2022-02-23 16:01:35,965 INFO L226 Difference]: Without dead ends: 17 [2022-02-23 16:01:35,967 INFO L932 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 [2022-02-23 16:01:35,969 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:01:35,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:01:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-23 16:01:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-23 16:01:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 16:01:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-23 16:01:36,009 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2022-02-23 16:01:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:01:36,009 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-23 16:01:36,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-02-23 16:01:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-23 16:01:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 16:01:36,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:01:36,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:01:36,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 16:01:36,010 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:01:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:01:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1564581500, now seen corresponding path program 1 times [2022-02-23 16:01:36,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:01:36,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654488772] [2022-02-23 16:01:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:36,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:01:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:01:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:01:36,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:01:36,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654488772] [2022-02-23 16:01:36,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654488772] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:01:36,117 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:01:36,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 16:01:36,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340504173] [2022-02-23 16:01:36,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:01:36,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 16:01:36,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:01:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 16:01:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 16:01:36,120 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-02-23 16:01:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:01:36,165 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-23 16:01:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 16:01:36,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-02-23 16:01:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:01:36,167 INFO L225 Difference]: With dead ends: 20 [2022-02-23 16:01:36,167 INFO L226 Difference]: Without dead ends: 20 [2022-02-23 16:01:36,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-23 16:01:36,169 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:01:36,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:01:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-23 16:01:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-02-23 16:01:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 16:01:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-02-23 16:01:36,174 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-02-23 16:01:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:01:36,174 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-02-23 16:01:36,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-02-23 16:01:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-02-23 16:01:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 16:01:36,175 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:01:36,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:01:36,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 16:01:36,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:01:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:01:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1890585047, now seen corresponding path program 1 times [2022-02-23 16:01:36,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:01:36,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458675980] [2022-02-23 16:01:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:36,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:01:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:01:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 16:01:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:01:36,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:01:36,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458675980] [2022-02-23 16:01:36,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458675980] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 16:01:36,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309750469] [2022-02-23 16:01:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:36,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:01:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:01:36,305 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) [2022-02-23 16:01:36,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 16:01:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:36,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 16:01:36,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:01:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:01:36,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:01:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:01:36,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309750469] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:01:36,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 16:01:36,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-02-23 16:01:36,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625781532] [2022-02-23 16:01:36,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 16:01:36,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 16:01:36,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:01:36,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 16:01:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-23 16:01:36,531 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 16:01:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:01:36,642 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-02-23 16:01:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 16:01:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2022-02-23 16:01:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:01:36,643 INFO L225 Difference]: With dead ends: 24 [2022-02-23 16:01:36,643 INFO L226 Difference]: Without dead ends: 24 [2022-02-23 16:01:36,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-02-23 16:01:36,644 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 16:01:36,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 16:01:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-23 16:01:36,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-23 16:01:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 16:01:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-02-23 16:01:36,648 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2022-02-23 16:01:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:01:36,648 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-02-23 16:01:36,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 16:01:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-02-23 16:01:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-23 16:01:36,649 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:01:36,649 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:01:36,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 16:01:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:01:36,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:01:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:01:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1393393715, now seen corresponding path program 2 times [2022-02-23 16:01:36,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:01:36,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854242472] [2022-02-23 16:01:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:01:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:37,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:01:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 16:01:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:37,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 16:01:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 16:01:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-23 16:01:37,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:01:37,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854242472] [2022-02-23 16:01:37,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854242472] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 16:01:37,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084108738] [2022-02-23 16:01:37,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 16:01:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:01:37,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:01:37,248 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) [2022-02-23 16:01:37,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 16:01:37,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 16:01:37,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 16:01:37,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-23 16:01:37,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:01:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-23 16:01:37,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:01:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-23 16:01:37,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084108738] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:01:37,805 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 16:01:37,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 22 [2022-02-23 16:01:37,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008452454] [2022-02-23 16:01:37,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 16:01:37,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-23 16:01:37,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:01:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-23 16:01:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-02-23 16:01:37,806 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 15 states have internal predecessors, (32), 8 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 16:01:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:01:38,277 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-02-23 16:01:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-23 16:01:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 15 states have internal predecessors, (32), 8 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 29 [2022-02-23 16:01:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:01:38,278 INFO L225 Difference]: With dead ends: 36 [2022-02-23 16:01:38,278 INFO L226 Difference]: Without dead ends: 36 [2022-02-23 16:01:38,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-02-23 16:01:38,280 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 16:01:38,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 74 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 16:01:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-23 16:01:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-23 16:01:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-23 16:01:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-02-23 16:01:38,286 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2022-02-23 16:01:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:01:38,287 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-02-23 16:01:38,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 15 states have internal predecessors, (32), 8 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 16:01:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-02-23 16:01:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-23 16:01:38,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:01:38,288 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:01:38,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 16:01:38,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-23 16:01:38,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:01:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:01:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash 638375751, now seen corresponding path program 3 times [2022-02-23 16:01:38,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:01:38,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233685940] [2022-02-23 16:01:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:38,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:01:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:01:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 16:01:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 16:01:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 16:01:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-23 16:01:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-23 16:01:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-23 16:01:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-23 16:01:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-02-23 16:01:38,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:01:38,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233685940] [2022-02-23 16:01:38,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233685940] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 16:01:38,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523047287] [2022-02-23 16:01:38,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 16:01:38,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:01:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:01:38,859 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) [2022-02-23 16:01:38,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 16:01:38,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-23 16:01:38,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 16:01:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-23 16:01:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:01:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-02-23 16:01:39,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:01:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-23 16:01:39,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523047287] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:01:40,000 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 16:01:40,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 42 [2022-02-23 16:01:40,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620738564] [2022-02-23 16:01:40,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 16:01:40,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-23 16:01:40,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:01:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-23 16:01:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2022-02-23 16:01:40,002 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 27 states have internal predecessors, (56), 16 states have call successors, (18), 3 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 16:01:44,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:01:44,480 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-02-23 16:01:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-23 16:01:44,481 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 27 states have internal predecessors, (56), 16 states have call successors, (18), 3 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 53 [2022-02-23 16:01:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:01:44,481 INFO L225 Difference]: With dead ends: 60 [2022-02-23 16:01:44,481 INFO L226 Difference]: Without dead ends: 60 [2022-02-23 16:01:44,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=845, Invalid=4267, Unknown=0, NotChecked=0, Total=5112 [2022-02-23 16:01:44,484 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 39 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 16:01:44,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 148 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 16:01:44,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-23 16:01:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-02-23 16:01:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-02-23 16:01:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-02-23 16:01:44,489 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 53 [2022-02-23 16:01:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:01:44,490 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-02-23 16:01:44,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 27 states have internal predecessors, (56), 16 states have call successors, (18), 3 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 16:01:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-02-23 16:01:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-23 16:01:44,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:01:44,500 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:01:44,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-23 16:01:44,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:01:44,707 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:01:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:01:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1561497967, now seen corresponding path program 4 times [2022-02-23 16:01:44,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:01:44,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912753917] [2022-02-23 16:01:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:01:44,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:01:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:01:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 16:01:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 16:01:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 16:01:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-23 16:01:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-23 16:01:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-23 16:01:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-23 16:01:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-23 16:01:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-23 16:01:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-23 16:01:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-23 16:01:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-23 16:01:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-23 16:01:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-23 16:01:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-23 16:01:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:01:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-02-23 16:01:45,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:01:45,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912753917] [2022-02-23 16:01:45,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912753917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 16:01:45,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895582455] [2022-02-23 16:01:45,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 16:01:45,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:01:45,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:01:45,556 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) [2022-02-23 16:01:45,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 16:01:45,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 16:01:45,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 16:01:45,612 WARN L261 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 153 conjunts are in the unsatisfiable core [2022-02-23 16:01:45,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:01:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-02-23 16:01:46,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:01:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-02-23 16:01:48,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895582455] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:01:48,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 16:01:48,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 82 [2022-02-23 16:01:48,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744508746] [2022-02-23 16:01:48,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 16:01:48,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-23 16:01:48,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:01:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-23 16:01:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=5953, Unknown=0, NotChecked=0, Total=6642 [2022-02-23 16:01:48,577 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 82 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 51 states have internal predecessors, (104), 32 states have call successors, (34), 3 states have call predecessors, (34), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-02-23 16:04:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:04:12,706 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2022-02-23 16:04:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-23 16:04:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 51 states have internal predecessors, (104), 32 states have call successors, (34), 3 states have call predecessors, (34), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 101 [2022-02-23 16:04:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:04:12,710 INFO L225 Difference]: With dead ends: 108 [2022-02-23 16:04:12,710 INFO L226 Difference]: Without dead ends: 108 [2022-02-23 16:04:12,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 172 SyntacticMatches, 15 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3052 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=3100, Invalid=17490, Unknown=2, NotChecked=0, Total=20592 [2022-02-23 16:04:12,716 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 3834 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 4200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 3834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-23 16:04:12,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 266 Invalid, 4200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 3834 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-23 16:04:12,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-23 16:04:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-02-23 16:04:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 16:04:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2022-02-23 16:04:12,724 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 101 [2022-02-23 16:04:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:04:12,725 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2022-02-23 16:04:12,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 51 states have internal predecessors, (104), 32 states have call successors, (34), 3 states have call predecessors, (34), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-02-23 16:04:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2022-02-23 16:04:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-02-23 16:04:12,727 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:04:12,727 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:04:12,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-23 16:04:12,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:04:12,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:04:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:04:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1223308735, now seen corresponding path program 5 times [2022-02-23 16:04:12,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:04:12,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283118055] [2022-02-23 16:04:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:04:12,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:04:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:04:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 16:04:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 16:04:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 16:04:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-23 16:04:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-23 16:04:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-23 16:04:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-23 16:04:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-23 16:04:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-23 16:04:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-23 16:04:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-02-23 16:04:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-23 16:04:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-23 16:04:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-23 16:04:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-02-23 16:04:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-02-23 16:04:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-23 16:04:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-23 16:04:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-02-23 16:04:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-02-23 16:04:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-23 16:04:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-02-23 16:04:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-02-23 16:04:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-02-23 16:04:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-23 16:04:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-02-23 16:04:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-02-23 16:04:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-02-23 16:04:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-23 16:04:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-02-23 16:04:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-02-23 16:04:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:04:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-02-23 16:04:14,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:04:14,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283118055] [2022-02-23 16:04:14,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283118055] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 16:04:14,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138147969] [2022-02-23 16:04:14,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 16:04:14,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:04:14,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:04:14,912 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) [2022-02-23 16:04:14,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 16:04:30,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-02-23 16:04:30,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 16:04:30,260 WARN L261 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 313 conjunts are in the unsatisfiable core [2022-02-23 16:04:30,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:04:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-02-23 16:04:32,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:04:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-02-23 16:04:40,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138147969] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:04:40,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 16:04:40,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 96] total 162 [2022-02-23 16:04:40,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467234941] [2022-02-23 16:04:40,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 16:04:40,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-02-23 16:04:40,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:04:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-02-23 16:04:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2401, Invalid=23681, Unknown=0, NotChecked=0, Total=26082 [2022-02-23 16:04:40,565 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 162 states, 162 states have (on average 1.2345679012345678) internal successors, (200), 99 states have internal predecessors, (200), 64 states have call successors, (66), 3 states have call predecessors, (66), 33 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-02-23 16:06:01,855 WARN L232 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 136 DAG size of output: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:07:30,365 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 56 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ 60 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 58) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 54) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-02-23 16:09:00,224 WARN L232 SmtUtils]: Spent 10.80s on a formula simplification. DAG size of input: 122 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:10:17,255 WARN L232 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 128 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:10:19,506 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 56 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 54) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-02-23 16:11:36,377 WARN L232 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 118 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:12:53,231 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ 16 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 52 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 50) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 10) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 42 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 12) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 38) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 28) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 20) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 24) 4294967296) 268435455) (< (mod (+ 34 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 26) 4294967296) 268435455) (< (mod (+ 46 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 18) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 36) 4294967296) 268435455) (< (mod (+ 32 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 4) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 48) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 6 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 54) 4294967296) 268435455) (< (mod |c_main_#t~ret4| 4294967296) 268435455) (< (mod (+ 44 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 22 |c_main_#t~ret4|) 4294967296) 268435455) (< (mod (+ |c_main_#t~ret4| 8) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false