/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/loops/invert_string-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 15:46:40,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 15:46:40,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 15:46:40,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-23 15:46:40,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 15:46:40,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 15:46:40,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 15:46:40,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 15:46:40,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 15:46:40,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 15:46:40,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 15:46:40,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 15:46:40,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 15:46:40,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 15:46:40,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 15:46:40,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 15:46:40,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 15:46:40,230 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 15:46:40,230 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 15:46:40,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 15:46:40,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 15:46:40,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 15:46:40,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 15:46:40,448 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 15:46:40,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/invert_string-3.c [2022-02-23 15:46:40,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d3e63630/3601621120154c2287e9c9a35109de5c/FLAGea6f5cb78 [2022-02-23 15:46:40,826 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 15:46:40,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-3.c [2022-02-23 15:46:40,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d3e63630/3601621120154c2287e9c9a35109de5c/FLAGea6f5cb78 [2022-02-23 15:46:41,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d3e63630/3601621120154c2287e9c9a35109de5c [2022-02-23 15:46:41,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 15:46:41,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 15:46:41,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 15:46:41,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 15:46:41,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 15:46:41,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fe9c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41, skipping insertion in model container [2022-02-23 15:46:41,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 15:46:41,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 15:46:41,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-3.c[327,340] [2022-02-23 15:46:41,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 15:46:41,401 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 15:46:41,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-3.c[327,340] [2022-02-23 15:46:41,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 15:46:41,447 INFO L208 MainTranslator]: Completed translation [2022-02-23 15:46:41,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41 WrapperNode [2022-02-23 15:46:41,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 15:46:41,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 15:46:41,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 15:46:41,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 15:46:41,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 15:46:41,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 15:46:41,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 15:46:41,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 15:46:41,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 15:46:41,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:46:41,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 15:46:41,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 15:46:41,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 15:46:41,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 15:46:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 15:46:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 15:46:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 15:46:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 15:46:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 15:46:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 15:46:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 15:46:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 15:46:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-23 15:46:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 15:46:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-23 15:46:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 15:46:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 15:46:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 15:46:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 15:46:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 15:46:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 15:46:41,600 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 15:46:41,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 15:46:41,753 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 15:46:41,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 15:46:41,761 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-23 15:46:41,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 03:46:41 BoogieIcfgContainer [2022-02-23 15:46:41,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 15:46:41,763 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 15:46:41,763 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 15:46:41,764 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 15:46:41,778 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 03:46:41" (1/1) ... [2022-02-23 15:46:41,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 03:46:41 BasicIcfg [2022-02-23 15:46:41,806 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 15:46:41,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 15:46:41,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 15:46:41,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 15:46:41,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 03:46:41" (1/4) ... [2022-02-23 15:46:41,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c5b947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 03:46:41, skipping insertion in model container [2022-02-23 15:46:41,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 03:46:41" (2/4) ... [2022-02-23 15:46:41,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c5b947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 03:46:41, skipping insertion in model container [2022-02-23 15:46:41,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 03:46:41" (3/4) ... [2022-02-23 15:46:41,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c5b947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 03:46:41, skipping insertion in model container [2022-02-23 15:46:41,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 03:46:41" (4/4) ... [2022-02-23 15:46:41,815 INFO L111 eAbstractionObserver]: Analyzing ICFG invert_string-3.cJordan [2022-02-23 15:46:41,818 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 15:46:41,818 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 15:46:41,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 15:46:41,864 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 15:46:41,865 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 15:46:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 15:46:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-23 15:46:41,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:41,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:41,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash 677474136, now seen corresponding path program 1 times [2022-02-23 15:46:41,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:41,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935507335] [2022-02-23 15:46:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:41,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 15:46:42,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:42,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935507335] [2022-02-23 15:46:42,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935507335] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 15:46:42,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 15:46:42,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 15:46:42,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918372143] [2022-02-23 15:46:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 15:46:42,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 15:46:42,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 15:46:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 15:46:42,095 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:42,127 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-02-23 15:46:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 15:46:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-23 15:46:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:42,136 INFO L225 Difference]: With dead ends: 27 [2022-02-23 15:46:42,136 INFO L226 Difference]: Without dead ends: 22 [2022-02-23 15:46:42,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 15:46:42,141 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:42,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 15:46:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-23 15:46:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-02-23 15:46:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 15:46:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-02-23 15:46:42,167 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2022-02-23 15:46:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:42,168 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-02-23 15:46:42,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-02-23 15:46:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-23 15:46:42,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:42,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:42,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 15:46:42,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash -242476646, now seen corresponding path program 1 times [2022-02-23 15:46:42,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:42,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371900513] [2022-02-23 15:46:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 15:46:42,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:42,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371900513] [2022-02-23 15:46:42,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371900513] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 15:46:42,352 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 15:46:42,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 15:46:42,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366057642] [2022-02-23 15:46:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 15:46:42,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 15:46:42,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 15:46:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 15:46:42,354 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:42,444 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-02-23 15:46:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 15:46:42,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-23 15:46:42,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:42,445 INFO L225 Difference]: With dead ends: 24 [2022-02-23 15:46:42,446 INFO L226 Difference]: Without dead ends: 24 [2022-02-23 15:46:42,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 15:46:42,450 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:42,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 15:46:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-23 15:46:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-02-23 15:46:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 15:46:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-02-23 15:46:42,457 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-02-23 15:46:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:42,457 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-02-23 15:46:42,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-02-23 15:46:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 15:46:42,459 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:42,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:42,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 15:46:42,465 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1931903288, now seen corresponding path program 1 times [2022-02-23 15:46:42,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:42,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454550700] [2022-02-23 15:46:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-23 15:46:42,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:42,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454550700] [2022-02-23 15:46:42,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454550700] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 15:46:42,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 15:46:42,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 15:46:42,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756866339] [2022-02-23 15:46:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 15:46:42,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 15:46:42,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 15:46:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 15:46:42,584 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:42,628 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-02-23 15:46:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 15:46:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 17 [2022-02-23 15:46:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:42,630 INFO L225 Difference]: With dead ends: 25 [2022-02-23 15:46:42,630 INFO L226 Difference]: Without dead ends: 25 [2022-02-23 15:46:42,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-23 15:46:42,633 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:42,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 15:46:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-23 15:46:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-02-23 15:46:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 15:46:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-02-23 15:46:42,636 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2022-02-23 15:46:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:42,637 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-02-23 15:46:42,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-02-23 15:46:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-23 15:46:42,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:42,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:42,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 15:46:42,638 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:42,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1226486282, now seen corresponding path program 1 times [2022-02-23 15:46:42,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:42,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134829242] [2022-02-23 15:46:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-23 15:46:42,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:42,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134829242] [2022-02-23 15:46:42,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134829242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 15:46:42,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915126219] [2022-02-23 15:46:42,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:46:42,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 15:46:42,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 15:46:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:42,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-23 15:46:42,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 15:46:42,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-23 15:46:42,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2022-02-23 15:46:42,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-02-23 15:46:42,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-02-23 15:46:43,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-02-23 15:46:43,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:46:43,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:46:43,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 10 [2022-02-23 15:46:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-23 15:46:43,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 15:46:43,585 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-23 15:46:43,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 1 [2022-02-23 15:46:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-23 15:46:43,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915126219] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 15:46:43,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 15:46:43,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 20 [2022-02-23 15:46:43,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805381666] [2022-02-23 15:46:43,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 15:46:43,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-23 15:46:43,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-23 15:46:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-02-23 15:46:43,605 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:44,374 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-02-23 15:46:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 15:46:44,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-23 15:46:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:44,376 INFO L225 Difference]: With dead ends: 46 [2022-02-23 15:46:44,376 INFO L226 Difference]: Without dead ends: 46 [2022-02-23 15:46:44,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2022-02-23 15:46:44,377 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:44,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 49 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 15:46:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-23 15:46:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2022-02-23 15:46:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 15:46:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-02-23 15:46:44,382 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2022-02-23 15:46:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:44,382 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-02-23 15:46:44,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-02-23 15:46:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 15:46:44,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:44,383 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:44,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 15:46:44,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:44,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1057862574, now seen corresponding path program 2 times [2022-02-23 15:46:44,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:44,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741767771] [2022-02-23 15:46:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:44,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:44,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 15:46:44,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:44,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741767771] [2022-02-23 15:46:44,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741767771] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 15:46:44,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537607967] [2022-02-23 15:46:44,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 15:46:44,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:44,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:46:44,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 15:46:44,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 15:46:44,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 15:46:44,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 15:46:44,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-23 15:46:44,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 15:46:44,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-23 15:46:45,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-02-23 15:46:45,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:46:45,372 INFO L356 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-02-23 15:46:45,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2022-02-23 15:46:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 15:46:45,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 15:46:45,620 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:46:45,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-02-23 15:46:45,667 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-02-23 15:46:45,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-02-23 15:46:45,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-02-23 15:46:45,687 INFO L356 Elim1Store]: treesize reduction 27, result has 34.1 percent of original size [2022-02-23 15:46:45,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 45 [2022-02-23 15:46:45,699 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:46:45,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2022-02-23 15:46:45,748 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-02-23 15:46:45,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-02-23 15:46:45,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-02-23 15:46:45,769 INFO L356 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2022-02-23 15:46:45,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 49 [2022-02-23 15:46:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 15:46:45,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537607967] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 15:46:45,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 15:46:45,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 26 [2022-02-23 15:46:45,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369836872] [2022-02-23 15:46:45,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 15:46:45,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-23 15:46:45,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-23 15:46:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-02-23 15:46:45,938 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:47,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:47,164 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-02-23 15:46:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-23 15:46:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-23 15:46:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:47,165 INFO L225 Difference]: With dead ends: 51 [2022-02-23 15:46:47,165 INFO L226 Difference]: Without dead ends: 51 [2022-02-23 15:46:47,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2022-02-23 15:46:47,166 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:47,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 77 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 15:46:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-23 15:46:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2022-02-23 15:46:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 15:46:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-02-23 15:46:47,170 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 23 [2022-02-23 15:46:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:47,170 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-02-23 15:46:47,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-02-23 15:46:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-23 15:46:47,171 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:47,171 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:47,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 15:46:47,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:47,388 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:47,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash -126211412, now seen corresponding path program 3 times [2022-02-23 15:46:47,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:47,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151906041] [2022-02-23 15:46:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-23 15:46:47,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:47,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151906041] [2022-02-23 15:46:47,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151906041] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 15:46:47,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820178954] [2022-02-23 15:46:47,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 15:46:47,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:47,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:46:47,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 15:46:47,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 15:46:47,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-23 15:46:47,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 15:46:47,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-23 15:46:47,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 15:46:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-23 15:46:47,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 15:46:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-23 15:46:47,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820178954] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 15:46:47,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 15:46:47,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-02-23 15:46:47,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032253623] [2022-02-23 15:46:47,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 15:46:47,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 15:46:47,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 15:46:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-02-23 15:46:47,714 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:47,820 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-02-23 15:46:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 15:46:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-23 15:46:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:47,822 INFO L225 Difference]: With dead ends: 47 [2022-02-23 15:46:47,822 INFO L226 Difference]: Without dead ends: 47 [2022-02-23 15:46:47,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-23 15:46:47,823 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:47,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 15:46:47,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-23 15:46:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-02-23 15:46:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 15:46:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-02-23 15:46:47,826 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2022-02-23 15:46:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:47,826 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-02-23 15:46:47,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-02-23 15:46:47,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-23 15:46:47,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:47,827 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:47,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 15:46:48,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:48,037 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1457388698, now seen corresponding path program 4 times [2022-02-23 15:46:48,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:48,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789934493] [2022-02-23 15:46:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-23 15:46:48,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:48,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789934493] [2022-02-23 15:46:48,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789934493] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 15:46:48,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536534635] [2022-02-23 15:46:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 15:46:48,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:46:48,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 15:46:48,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 15:46:48,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 15:46:48,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 15:46:48,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-23 15:46:48,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 15:46:48,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-23 15:46:49,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-02-23 15:46:49,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:46:49,815 INFO L356 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size [2022-02-23 15:46:49,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 13 [2022-02-23 15:46:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-23 15:46:49,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 15:46:50,111 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:46:50,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-02-23 15:46:50,158 INFO L356 Elim1Store]: treesize reduction 27, result has 34.1 percent of original size [2022-02-23 15:46:50,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 45 [2022-02-23 15:46:50,166 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-23 15:46:50,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-02-23 15:46:50,177 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:46:50,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2022-02-23 15:46:50,225 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-02-23 15:46:50,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2022-02-23 15:46:50,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-02-23 15:46:50,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-02-23 15:46:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-23 15:46:50,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536534635] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 15:46:50,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 15:46:50,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 18] total 50 [2022-02-23 15:46:50,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370957408] [2022-02-23 15:46:50,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 15:46:50,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-23 15:46:50,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:46:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-23 15:46:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2147, Unknown=0, NotChecked=0, Total=2450 [2022-02-23 15:46:50,718 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 50 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 47 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:46:58,144 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2022-02-23 15:46:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-23 15:46:58,144 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 47 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-23 15:46:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:46:58,146 INFO L225 Difference]: With dead ends: 145 [2022-02-23 15:46:58,146 INFO L226 Difference]: Without dead ends: 145 [2022-02-23 15:46:58,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3630 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2087, Invalid=12193, Unknown=0, NotChecked=0, Total=14280 [2022-02-23 15:46:58,149 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 281 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 15:46:58,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 116 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 15:46:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-23 15:46:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 42. [2022-02-23 15:46:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 15:46:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2022-02-23 15:46:58,156 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 35 [2022-02-23 15:46:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:46:58,156 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2022-02-23 15:46:58,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 47 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 15:46:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2022-02-23 15:46:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-23 15:46:58,157 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:46:58,157 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:46:58,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 15:46:58,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:58,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:46:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:46:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash -349680096, now seen corresponding path program 1 times [2022-02-23 15:46:58,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:46:58,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904433260] [2022-02-23 15:46:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:46:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:46:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-23 15:46:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-02-23 15:46:58,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:46:58,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904433260] [2022-02-23 15:46:58,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904433260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 15:46:58,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437285882] [2022-02-23 15:46:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:46:58,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:46:58,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:46:58,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 15:46:58,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 15:46:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:46:58,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-23 15:46:58,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 15:46:58,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-23 15:46:58,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-02-23 15:46:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-23 15:46:58,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-02-23 15:47:01,339 WARN L860 $PredicateComparison]: unable to prove that (exists ((aux_div_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168 Int) (aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168 Int) (|v_main_~#str2~0.base_BEFORE_CALL_1| Int) (aux_div_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143 Int) (aux_div_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123 Int) (aux_div_v_main_~j~0_BEFORE_CALL_1_46 Int) (|v_main_~#str1~0.base_BEFORE_CALL_1| Int)) (let ((.cse1 (* aux_div_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168 4294967296))) (let ((.cse0 (+ aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168 .cse1))) (and (= (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_1|) 1) (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_1|) (+ (- 1) (mod (+ 4294967295 (* 4294967295 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168)) 4294967296)))) (<= 0 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168) (< aux_div_v_main_~j~0_BEFORE_CALL_1_46 (+ aux_div_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143 1)) (<= .cse0 4294967295) (< 0 (+ aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168 1 .cse1)) (<= .cse0 (+ (* aux_div_v_main_~j~0_BEFORE_CALL_1_46 4294967296) 4294967295)) (<= .cse0 (+ (* aux_div_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123 4294967296) 4294967293)) (< aux_div_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123 (+ aux_div_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143_168 1)) (<= (+ (* aux_div_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_1_46_123_143 4294967296) 4294967293) .cse0) (not (= |v_main_~#str2~0.base_BEFORE_CALL_1| |v_main_~#str1~0.base_BEFORE_CALL_1|)))))) is different from true [2022-02-23 15:47:03,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:47:03,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:47:03,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 10 [2022-02-23 15:47:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 2 not checked. [2022-02-23 15:47:03,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 15:47:03,841 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:47:03,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 206 [2022-02-23 15:47:04,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-23 15:47:04,142 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:47:04,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 256 treesize of output 227 [2022-02-23 15:47:04,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-23 15:47:04,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-02-23 15:47:04,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:47:04,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-02-23 15:47:04,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-23 15:47:04,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-02-23 15:47:04,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 96 [2022-02-23 15:47:04,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-23 15:47:04,379 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-02-23 15:47:04,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 108 [2022-02-23 15:47:04,431 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-23 15:47:04,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 206 [2022-02-23 15:47:04,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-02-23 15:47:04,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 96 [2022-02-23 15:47:04,770 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-02-23 15:47:04,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 209 [2022-02-23 15:47:04,879 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-23 15:47:04,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 92 [2022-02-23 15:47:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-23 15:47:05,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437285882] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 15:47:05,384 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 15:47:05,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 17] total 37 [2022-02-23 15:47:05,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808149642] [2022-02-23 15:47:05,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 15:47:05,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-23 15:47:05,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 15:47:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-23 15:47:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1107, Unknown=1, NotChecked=68, Total=1332 [2022-02-23 15:47:05,386 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 5 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 15:47:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 15:47:07,753 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2022-02-23 15:47:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-23 15:47:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 5 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-02-23 15:47:07,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 15:47:07,754 INFO L225 Difference]: With dead ends: 67 [2022-02-23 15:47:07,754 INFO L226 Difference]: Without dead ends: 67 [2022-02-23 15:47:07,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=499, Invalid=3164, Unknown=1, NotChecked=118, Total=3782 [2022-02-23 15:47:07,755 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 15:47:07,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 89 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 551 Invalid, 0 Unknown, 143 Unchecked, 0.4s Time] [2022-02-23 15:47:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-23 15:47:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2022-02-23 15:47:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 15:47:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2022-02-23 15:47:07,759 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 39 [2022-02-23 15:47:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 15:47:07,759 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2022-02-23 15:47:07,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 5 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 15:47:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2022-02-23 15:47:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-23 15:47:07,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 15:47:07,760 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 15:47:07,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-23 15:47:07,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:47:07,975 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 15:47:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 15:47:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -821800838, now seen corresponding path program 2 times [2022-02-23 15:47:07,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 15:47:07,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951332321] [2022-02-23 15:47:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 15:47:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 15:47:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:47:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 15:47:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:47:08,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-23 15:47:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 15:47:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-02-23 15:47:08,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 15:47:08,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951332321] [2022-02-23 15:47:08,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951332321] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 15:47:08,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983178111] [2022-02-23 15:47:08,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 15:47:08,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 15:47:08,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 15:47:08,150 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 15:47:08,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 15:47:08,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 15:47:08,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 15:47:08,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 75 conjunts are in the unsatisfiable core [2022-02-23 15:47:08,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 15:47:08,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-23 15:47:08,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-02-23 15:47:08,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-02-23 15:47:08,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-02-23 15:47:08,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-02-23 15:47:08,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2022-02-23 15:47:08,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-02-23 15:47:08,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-02-23 15:47:08,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-23 15:47:08,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-23 15:47:08,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-23 15:47:08,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-23 15:47:08,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-02-23 15:47:09,022 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-02-23 15:47:09,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-02-23 15:47:11,406 WARN L860 $PredicateComparison]: unable to prove that (exists ((aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172 Int) (|v_main_~#str2~0.base_BEFORE_CALL_3| Int) (aux_div_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172 Int) (aux_div_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119 Int) (aux_div_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154 Int) (|v_main_~#str2~0.offset_BEFORE_CALL_3| Int) (|v_main_~#str1~0.base_BEFORE_CALL_3| Int) (aux_div_v_main_~j~0_BEFORE_CALL_3_56 Int)) (let ((.cse1 (* aux_div_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172 4294967296))) (let ((.cse0 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172))) (and (<= .cse0 (+ (* 4294967296 aux_div_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119) 5)) (<= .cse0 (* aux_div_v_main_~j~0_BEFORE_CALL_3_56 4294967296)) (< 0 (+ 4294967291 .cse1 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172)) (< aux_div_v_main_~j~0_BEFORE_CALL_3_56 (+ aux_div_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154 1)) (= (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_3|) (+ (mod (+ (* 4294967295 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172) 5) 4294967296) (- 4))) (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_3|) (+ |v_main_~#str2~0.offset_BEFORE_CALL_3| 4))) (<= .cse0 5) (not (= |v_main_~#str2~0.base_BEFORE_CALL_3| |v_main_~#str1~0.base_BEFORE_CALL_3|)) (< aux_div_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119 (+ aux_div_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172) (<= (* aux_div_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154 4294967296) (+ 4294967290 .cse1 aux_mod_aux_mod_aux_mod_aux_mod_v_main_~j~0_BEFORE_CALL_3_56_119_154_172)))))) is different from true [2022-02-23 15:47:12,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-23 15:47:12,280 INFO L356 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size [2022-02-23 15:47:12,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 13 [2022-02-23 15:47:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-02-23 15:47:12,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 15:47:26,832 WARN L232 SmtUtils]: Spent 11.96s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 15:47:36,601 WARN L232 SmtUtils]: Spent 9.67s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 15:47:36,627 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 2 c_main_~i~0)) (<= 3 c_main_~i~0) (let ((.cse1 (<= (mod (+ 4294967295 c_main_~max~0) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_311 Int) (v_ArrVal_307 (Array Int Int)) (|main_~#str2~0.offset| Int)) (let ((.cse0 (store (store v_ArrVal_307 (+ |main_~#str2~0.offset| c_main_~j~0 1) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| v_ArrVal_307) |c_main_~#str1~0.base|) (+ (- 1) |c_main_~#str1~0.offset| c_main_~i~0))) (+ 2 |main_~#str2~0.offset| c_main_~j~0) v_ArrVal_311))) (= (select .cse0 (+ |main_~#str2~0.offset| (- 4294967297) (mod (+ 4294967295 c_main_~max~0) 4294967296))) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| .cse0) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| 1))))) .cse1) (or (not .cse1) (forall ((v_ArrVal_311 Int) (v_ArrVal_307 (Array Int Int)) (|main_~#str2~0.offset| Int)) (let ((.cse2 (store (store v_ArrVal_307 (+ |main_~#str2~0.offset| c_main_~j~0 1) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| v_ArrVal_307) |c_main_~#str1~0.base|) (+ (- 1) |c_main_~#str1~0.offset| c_main_~i~0))) (+ 2 |main_~#str2~0.offset| c_main_~j~0) v_ArrVal_311))) (= (select .cse2 (+ (- 1) |main_~#str2~0.offset| (mod (+ 4294967295 c_main_~max~0) 4294967296))) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| .cse2) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| 1))))))))) is different from false [2022-02-23 15:47:36,650 WARN L838 $PredicateComparison]: unable to prove that (or (<= 4 c_main_~i~0) (not (<= 3 c_main_~i~0)) (let ((.cse1 (<= (mod (+ 4294967295 c_main_~max~0) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_311 Int) (v_ArrVal_307 (Array Int Int)) (|main_~#str2~0.offset| Int)) (let ((.cse0 (store (store v_ArrVal_307 (+ |main_~#str2~0.offset| c_main_~j~0 1) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| v_ArrVal_307) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| c_main_~i~0 (- 2)))) (+ 2 |main_~#str2~0.offset| c_main_~j~0) v_ArrVal_311))) (= (select (select (store |c_#memory_int| |c_main_~#str2~0.base| .cse0) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| 1)) (select .cse0 (+ |main_~#str2~0.offset| (- 4294967297) (mod (+ 4294967295 c_main_~max~0) 4294967296)))))) .cse1) (or (not .cse1) (forall ((v_ArrVal_311 Int) (v_ArrVal_307 (Array Int Int)) (|main_~#str2~0.offset| Int)) (let ((.cse2 (store (store v_ArrVal_307 (+ |main_~#str2~0.offset| c_main_~j~0 1) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| v_ArrVal_307) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| c_main_~i~0 (- 2)))) (+ 2 |main_~#str2~0.offset| c_main_~j~0) v_ArrVal_311))) (= (select .cse2 (+ (- 1) |main_~#str2~0.offset| (mod (+ 4294967295 c_main_~max~0) 4294967296))) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| .cse2) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| 1))))))))) is different from false [2022-02-23 15:47:36,673 WARN L838 $PredicateComparison]: unable to prove that (or (<= 4 c_main_~i~0) (not (<= 3 c_main_~i~0)) (let ((.cse1 (<= (mod (+ 4294967295 c_main_~max~0) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_311 Int) (v_ArrVal_307 (Array Int Int)) (|main_~#str2~0.offset| Int)) (let ((.cse0 (store (store v_ArrVal_307 (+ 2 |main_~#str2~0.offset| c_main_~j~0) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| v_ArrVal_307) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| c_main_~i~0 (- 2)))) (+ 3 |main_~#str2~0.offset| c_main_~j~0) v_ArrVal_311))) (= (select .cse0 (+ |main_~#str2~0.offset| (- 4294967297) (mod (+ 4294967295 c_main_~max~0) 4294967296))) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| .cse0) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| 1))))) .cse1) (or (not .cse1) (forall ((v_ArrVal_311 Int) (v_ArrVal_307 (Array Int Int)) (|main_~#str2~0.offset| Int)) (let ((.cse2 (store (store v_ArrVal_307 (+ 2 |main_~#str2~0.offset| c_main_~j~0) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| v_ArrVal_307) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| c_main_~i~0 (- 2)))) (+ 3 |main_~#str2~0.offset| c_main_~j~0) v_ArrVal_311))) (= (select .cse2 (+ (- 1) |main_~#str2~0.offset| (mod (+ 4294967295 c_main_~max~0) 4294967296))) (select (select (store |c_#memory_int| |c_main_~#str2~0.base| .cse2) |c_main_~#str1~0.base|) (+ |c_main_~#str1~0.offset| 1))))))))) is different from false