/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-34549b5 [2022-04-06 04:45:03,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 04:45:03,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 04:45:03,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 04:45:03,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 04:45:03,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 04:45:03,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 04:45:03,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 04:45:03,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 04:45:03,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 04:45:03,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 04:45:03,830 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 04:45:03,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 04:45:03,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 04:45:03,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 04:45:03,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 04:45:03,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 04:45:03,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 04:45:03,831 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 04:45:03,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 04:45:03,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 04:45:03,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 04:45:03,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 04:45:03,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 04:45:03,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 04:45:03,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 04:45:03,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 04:45:03,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 04:45:03,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 04:45:03,833 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 04:45:03,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 04:45:04,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 04:45:04,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 04:45:04,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 04:45:04,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 04:45:04,033 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 04:45:04,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-04-06 04:45:04,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ad06c92/761c53c791a74f2caee80522a6d8d793/FLAG1e00205cd [2022-04-06 04:45:04,416 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 04:45:04,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-2.c [2022-04-06 04:45:04,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ad06c92/761c53c791a74f2caee80522a6d8d793/FLAG1e00205cd [2022-04-06 04:45:04,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ad06c92/761c53c791a74f2caee80522a6d8d793 [2022-04-06 04:45:04,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 04:45:04,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 04:45:04,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 04:45:04,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 04:45:04,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 04:45:04,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11fd677e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04, skipping insertion in model container [2022-04-06 04:45:04,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 04:45:04,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 04:45:04,576 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] [2022-04-06 04:45:04,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 04:45:04,599 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 04:45:04,608 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] [2022-04-06 04:45:04,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 04:45:04,622 INFO L208 MainTranslator]: Completed translation [2022-04-06 04:45:04,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04 WrapperNode [2022-04-06 04:45:04,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 04:45:04,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 04:45:04,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 04:45:04,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 04:45:04,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 04:45:04,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 04:45:04,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 04:45:04,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 04:45:04,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 04:45:04,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:45:04,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 04:45:04,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 04:45:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 04:45:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 04:45:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 04:45:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 04:45:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-04-06 04:45:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-04-06 04:45:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 04:45:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 04:45:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 04:45:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 04:45:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 04:45:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 04:45:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 04:45:04,781 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 04:45:04,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 04:45:04,876 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 04:45:04,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 04:45:04,880 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 04:45:04,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:45:04 BoogieIcfgContainer [2022-04-06 04:45:04,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 04:45:04,882 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 04:45:04,882 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 04:45:04,896 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 04:45:04,898 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:45:04" (1/1) ... [2022-04-06 04:45:04,900 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 04:45:04,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 04:45:04 BasicIcfg [2022-04-06 04:45:04,908 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 04:45:04,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 04:45:04,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 04:45:04,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 04:45:04,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 04:45:04" (1/4) ... [2022-04-06 04:45:04,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766c234d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:45:04, skipping insertion in model container [2022-04-06 04:45:04,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:45:04" (2/4) ... [2022-04-06 04:45:04,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766c234d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:45:04, skipping insertion in model container [2022-04-06 04:45:04,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:45:04" (3/4) ... [2022-04-06 04:45:04,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766c234d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 04:45:04, skipping insertion in model container [2022-04-06 04:45:04,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 04:45:04" (4/4) ... [2022-04-06 04:45:04,914 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.cJordan [2022-04-06 04:45:04,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 04:45:04,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 04:45:04,944 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 04:45:04,948 INFO L340 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 [2022-04-06 04:45:04,948 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 04:45:04,960 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) [2022-04-06 04:45:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 04:45:04,965 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:45:04,965 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:45:04,966 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:45:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:45:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1565505021, now seen corresponding path program 1 times [2022-04-06 04:45:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:45:04,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522610979] [2022-04-06 04:45:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:04,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:45:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:45:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:45:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:45:05,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522610979] [2022-04-06 04:45:05,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522610979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:45:05,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:45:05,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 04:45:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150534532] [2022-04-06 04:45:05,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:45:05,154 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 04:45:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:45:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 04:45:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 04:45:05,176 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) [2022-04-06 04:45:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:45:05,209 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-04-06 04:45:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 04:45:05,211 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 [2022-04-06 04:45:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:45:05,216 INFO L225 Difference]: With dead ends: 23 [2022-04-06 04:45:05,216 INFO L226 Difference]: Without dead ends: 17 [2022-04-06 04:45:05,217 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 04:45:05,220 INFO L913 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 [2022-04-06 04:45:05,222 INFO L914 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] [2022-04-06 04:45:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-06 04:45:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-06 04:45:05,241 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) [2022-04-06 04:45:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-04-06 04:45:05,243 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2022-04-06 04:45:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:45:05,243 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-04-06 04:45:05,244 INFO L479 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) [2022-04-06 04:45:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-06 04:45:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 04:45:05,245 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:45:05,245 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:45:05,245 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 04:45:05,245 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:45:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:45:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1564581500, now seen corresponding path program 1 times [2022-04-06 04:45:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:45:05,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769246176] [2022-04-06 04:45:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:45:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:45:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:45:05,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:45:05,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769246176] [2022-04-06 04:45:05,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769246176] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:45:05,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:45:05,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 04:45:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501667235] [2022-04-06 04:45:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:45:05,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 04:45:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:45:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 04:45:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 04:45:05,348 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) [2022-04-06 04:45:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:45:05,384 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-04-06 04:45:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 04:45:05,385 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 [2022-04-06 04:45:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:45:05,386 INFO L225 Difference]: With dead ends: 20 [2022-04-06 04:45:05,386 INFO L226 Difference]: Without dead ends: 20 [2022-04-06 04:45:05,390 INFO L912 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 [2022-04-06 04:45:05,392 INFO L913 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 [2022-04-06 04:45:05,392 INFO L914 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] [2022-04-06 04:45:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-04-06 04:45:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-04-06 04:45:05,399 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) [2022-04-06 04:45:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-04-06 04:45:05,400 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-04-06 04:45:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:45:05,401 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-04-06 04:45:05,401 INFO L479 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) [2022-04-06 04:45:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-06 04:45:05,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 04:45:05,404 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:45:05,408 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:45:05,408 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 04:45:05,409 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:45:05,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:45:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1890585047, now seen corresponding path program 1 times [2022-04-06 04:45:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:45:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197202977] [2022-04-06 04:45:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:45:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:45:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 04:45:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:45:05,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:45:05,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197202977] [2022-04-06 04:45:05,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197202977] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:45:05,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954026335] [2022-04-06 04:45:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:05,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:45:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:45:05,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:45:05,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 04:45:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:05,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 04:45:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:45:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:45:05,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:45:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:45:05,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954026335] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:45:05,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:45:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-04-06 04:45:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433185843] [2022-04-06 04:45:05,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:45:05,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 04:45:05,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:45:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 04:45:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-06 04:45:05,875 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) [2022-04-06 04:45:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:45:05,997 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-06 04:45:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 04:45:05,997 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 [2022-04-06 04:45:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:45:05,998 INFO L225 Difference]: With dead ends: 24 [2022-04-06 04:45:05,998 INFO L226 Difference]: Without dead ends: 24 [2022-04-06 04:45:05,999 INFO L912 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 [2022-04-06 04:45:05,999 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-04-06 04:45:05,999 INFO L914 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] [2022-04-06 04:45:06,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-06 04:45:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-06 04:45:06,002 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) [2022-04-06 04:45:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-04-06 04:45:06,002 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2022-04-06 04:45:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:45:06,003 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-04-06 04:45:06,003 INFO L479 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) [2022-04-06 04:45:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-06 04:45:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 04:45:06,004 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:45:06,004 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:45:06,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 04:45:06,223 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:45:06,224 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:45:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:45:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1393393715, now seen corresponding path program 2 times [2022-04-06 04:45:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:45:06,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717498507] [2022-04-06 04:45:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:45:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:45:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 04:45:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 04:45:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 04:45:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-06 04:45:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:45:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717498507] [2022-04-06 04:45:06,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717498507] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:45:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561619473] [2022-04-06 04:45:06,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:45:06,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:45:06,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:45:06,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:45:06,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 04:45:06,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:45:06,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:45:06,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-06 04:45:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:45:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-06 04:45:06,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:45:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 04:45:06,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561619473] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:45:06,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:45:06,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 22 [2022-04-06 04:45:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190422933] [2022-04-06 04:45:06,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:45:06,920 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 04:45:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:45:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 04:45:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-04-06 04:45:06,920 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) [2022-04-06 04:45:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:45:07,390 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-04-06 04:45:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 04:45:07,391 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 [2022-04-06 04:45:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:45:07,393 INFO L225 Difference]: With dead ends: 36 [2022-04-06 04:45:07,393 INFO L226 Difference]: Without dead ends: 36 [2022-04-06 04:45:07,394 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 04:45:07,396 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-04-06 04:45:07,398 INFO L914 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] [2022-04-06 04:45:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-06 04:45:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-06 04:45:07,407 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) [2022-04-06 04:45:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-04-06 04:45:07,409 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2022-04-06 04:45:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:45:07,410 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-04-06 04:45:07,411 INFO L479 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) [2022-04-06 04:45:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-04-06 04:45:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 04:45:07,416 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:45:07,417 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:45:07,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 04:45:07,622 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-06 04:45:07,623 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:45:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:45:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash 638375751, now seen corresponding path program 3 times [2022-04-06 04:45:07,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:45:07,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489833780] [2022-04-06 04:45:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:07,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:45:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:45:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 04:45:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 04:45:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 04:45:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 04:45:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 04:45:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 04:45:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 04:45:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-04-06 04:45:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:45:07,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489833780] [2022-04-06 04:45:07,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489833780] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:45:07,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068258963] [2022-04-06 04:45:07,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:45:07,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:45:07,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:45:07,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:45:07,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 04:45:07,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-04-06 04:45:07,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:45:07,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2022-04-06 04:45:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:45:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-04-06 04:45:08,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:45:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-06 04:45:08,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068258963] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:45:08,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:45:08,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 42 [2022-04-06 04:45:08,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494968224] [2022-04-06 04:45:08,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:45:08,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-06 04:45:08,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:45:08,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-06 04:45:08,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2022-04-06 04:45:08,997 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) [2022-04-06 04:45:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:45:14,171 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-04-06 04:45:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-06 04:45:14,171 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 [2022-04-06 04:45:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:45:14,172 INFO L225 Difference]: With dead ends: 60 [2022-04-06 04:45:14,172 INFO L226 Difference]: Without dead ends: 60 [2022-04-06 04:45:14,174 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=845, Invalid=4267, Unknown=0, NotChecked=0, Total=5112 [2022-04-06 04:45:14,174 INFO L913 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 [2022-04-06 04:45:14,174 INFO L914 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] [2022-04-06 04:45:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-06 04:45:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-04-06 04:45:14,178 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) [2022-04-06 04:45:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-04-06 04:45:14,179 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 53 [2022-04-06 04:45:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:45:14,179 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-04-06 04:45:14,179 INFO L479 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) [2022-04-06 04:45:14,180 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-04-06 04:45:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-06 04:45:14,182 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:45:14,182 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:45:14,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 04:45:14,387 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:45:14,388 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:45:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:45:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1561497967, now seen corresponding path program 4 times [2022-04-06 04:45:14,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:45:14,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455070934] [2022-04-06 04:45:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:45:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:45:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:45:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:14,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 04:45:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 04:45:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 04:45:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 04:45:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 04:45:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 04:45:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 04:45:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 04:45:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 04:45:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-06 04:45:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-06 04:45:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-06 04:45:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-06 04:45:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 04:45:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-06 04:45:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:45:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-04-06 04:45:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:45:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455070934] [2022-04-06 04:45:15,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455070934] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:45:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596942622] [2022-04-06 04:45:15,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:45:15,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:45:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:45:15,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:45:15,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 04:45:15,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:45:15,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:45:15,152 WARN L261 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 153 conjunts are in the unsatisfiable core [2022-04-06 04:45:15,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:45:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-04-06 04:45:15,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:45:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-04-06 04:45:18,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596942622] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:45:18,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:45:18,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 82 [2022-04-06 04:45:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65251684] [2022-04-06 04:45:18,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:45:18,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-04-06 04:45:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:45:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-04-06 04:45:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=5953, Unknown=0, NotChecked=0, Total=6642 [2022-04-06 04:45:18,378 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) [2022-04-06 04:45:53,054 WARN L232 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 110 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 04:47:55,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:47:55,956 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2022-04-06 04:47:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-06 04:47:55,956 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 [2022-04-06 04:47:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:47:55,957 INFO L225 Difference]: With dead ends: 108 [2022-04-06 04:47:55,957 INFO L226 Difference]: Without dead ends: 108 [2022-04-06 04:47:55,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 172 SyntacticMatches, 15 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 157.8s TimeCoverageRelationStatistics Valid=3100, Invalid=17488, Unknown=4, NotChecked=0, Total=20592 [2022-04-06 04:47:55,962 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 3833 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 3833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:47:55,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 266 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 3833 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-06 04:47:55,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-04-06 04:47:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-04-06 04:47:55,968 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) [2022-04-06 04:47:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2022-04-06 04:47:55,969 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 101 [2022-04-06 04:47:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:47:55,970 INFO L478 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2022-04-06 04:47:55,970 INFO L479 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) [2022-04-06 04:47:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2022-04-06 04:47:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-04-06 04:47:55,972 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:47:55,972 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:47:55,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 04:47:56,174 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:47:56,175 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:47:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:47:56,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1223308735, now seen corresponding path program 5 times [2022-04-06 04:47:56,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:47:56,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068300447] [2022-04-06 04:47:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:47:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:47:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:47:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 04:47:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 04:47:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 04:47:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 04:47:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 04:47:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 04:47:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 04:47:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 04:47:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 04:47:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-06 04:47:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-06 04:47:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-06 04:47:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-06 04:47:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 04:47:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-06 04:47:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-06 04:47:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-06 04:47:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-06 04:47:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-06 04:47:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-06 04:47:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-06 04:47:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-06 04:47:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-06 04:47:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-06 04:47:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-06 04:47:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-06 04:47:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-06 04:47:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-06 04:47:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-06 04:47:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-06 04:47:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-06 04:47:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:47:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-04-06 04:47:58,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:47:58,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068300447] [2022-04-06 04:47:58,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068300447] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:47:58,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820958974] [2022-04-06 04:47:58,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:47:58,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:47:58,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:47:58,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:47:58,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 04:48:14,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-04-06 04:48:14,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:48:14,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 313 conjunts are in the unsatisfiable core [2022-04-06 04:48:14,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:48:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-04-06 04:48:16,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:48:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-04-06 04:48:26,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820958974] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:48:26,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:48:26,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 96] total 162 [2022-04-06 04:48:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082683613] [2022-04-06 04:48:26,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:48:26,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-04-06 04:48:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:48:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-04-06 04:48:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2401, Invalid=23681, Unknown=0, NotChecked=0, Total=26082 [2022-04-06 04:48:26,861 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) [2022-04-06 04:49:40,112 WARN L232 SmtUtils]: Spent 6.86s 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) [2022-04-06 04:51:26,225 WARN L232 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 132 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 04:51:28,409 WARN L833 $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 [2022-04-06 04:54:27,871 WARN L232 SmtUtils]: Spent 9.15s 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) [2022-04-06 04:54:30,036 WARN L833 $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 [2022-04-06 04:57:11,592 WARN L833 $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 [2022-04-06 04:59:38,396 WARN L232 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 120 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 04:59:40,583 WARN L833 $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 (+ |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| 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