/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 15:26:54,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 15:26:54,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 15:26:54,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 15:26:54,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 15:26:54,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 15:26:54,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 15:26:54,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 15:26:54,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 15:26:54,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 15:26:54,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 15:26:54,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 15:26:54,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 15:26:54,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 15:26:54,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 15:26:54,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 15:26:54,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 15:26:54,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 15:26:54,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 15:26:54,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 15:26:54,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 15:26:54,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 15:26:54,959 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 15:26:54,960 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 15:26:54,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 15:26:54,960 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 15:26:54,960 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 15:26:55,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 15:26:55,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 15:26:55,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 15:26:55,174 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 15:26:55,175 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 15:26:55,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-03-20 15:26:55,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a118b49/357974ac40444b1898846c26131aed5d/FLAGaf2f2b72d [2022-03-20 15:26:55,599 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 15:26:55,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-03-20 15:26:55,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a118b49/357974ac40444b1898846c26131aed5d/FLAGaf2f2b72d [2022-03-20 15:26:56,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a118b49/357974ac40444b1898846c26131aed5d [2022-03-20 15:26:56,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 15:26:56,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 15:26:56,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 15:26:56,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 15:26:56,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 15:26:56,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6b4fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56, skipping insertion in model container [2022-03-20 15:26:56,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 15:26:56,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 15:26:56,158 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-03-20 15:26:56,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 15:26:56,180 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 15:26:56,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-03-20 15:26:56,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 15:26:56,206 INFO L208 MainTranslator]: Completed translation [2022-03-20 15:26:56,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56 WrapperNode [2022-03-20 15:26:56,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 15:26:56,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 15:26:56,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 15:26:56,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 15:26:56,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 15:26:56,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 15:26:56,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 15:26:56,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 15:26:56,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (1/1) ... [2022-03-20 15:26:56,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 15:26:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:26:56,264 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) [2022-03-20 15:26:56,273 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 [2022-03-20 15:26:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 15:26:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 15:26:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 15:26:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 15:26:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 15:26:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 15:26:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 15:26:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 15:26:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 15:26:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 15:26:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 15:26:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 15:26:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 15:26:56,349 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 15:26:56,350 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 15:26:56,458 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 15:26:56,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 15:26:56,464 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 15:26:56,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:26:56 BoogieIcfgContainer [2022-03-20 15:26:56,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 15:26:56,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 15:26:56,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 15:26:56,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 15:26:56,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:26:56" (1/3) ... [2022-03-20 15:26:56,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bb476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:26:56, skipping insertion in model container [2022-03-20 15:26:56,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:26:56" (2/3) ... [2022-03-20 15:26:56,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bb476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:26:56, skipping insertion in model container [2022-03-20 15:26:56,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:26:56" (3/3) ... [2022-03-20 15:26:56,472 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2022-03-20 15:26:56,476 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 15:26:56,476 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 15:26:56,511 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 15:26:56,519 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 15:26:56,519 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 15:26:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 15:26:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 15:26:56,539 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:26:56,539 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:26:56,540 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:26:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:26:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-03-20 15:26:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:56,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [39793008] [2022-03-20 15:26:56,578 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:26:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-03-20 15:26:56,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:26:56,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009542017] [2022-03-20 15:26:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:26:56,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:26:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 15:26:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 15:26:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 15:26:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 15:26:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 15:26:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:26:56,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009542017] [2022-03-20 15:26:56,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009542017] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:56,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:56,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 15:26:56,866 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:26:56,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [39793008] [2022-03-20 15:26:56,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [39793008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:56,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:56,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 15:26:56,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869388507] [2022-03-20 15:26:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:26:56,871 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 15:26:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 15:26:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 15:26:56,904 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 15:26:57,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:26:57,013 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-03-20 15:26:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 15:26:57,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-03-20 15:26:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:26:57,024 INFO L225 Difference]: With dead ends: 69 [2022-03-20 15:26:57,025 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 15:26:57,029 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 15:26:57,035 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:26:57,037 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:26:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 15:26:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 15:26:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 15:26:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-03-20 15:26:57,090 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-03-20 15:26:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:26:57,091 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-03-20 15:26:57,091 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 15:26:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-03-20 15:26:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 15:26:57,093 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:26:57,094 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:26:57,094 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 15:26:57,094 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:26:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:26:57,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-03-20 15:26:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:57,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1457003107] [2022-03-20 15:26:57,099 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:26:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-03-20 15:26:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:26:57,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797922845] [2022-03-20 15:26:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:26:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:26:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 15:26:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 15:26:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 15:26:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 15:26:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 15:26:57,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:26:57,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797922845] [2022-03-20 15:26:57,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797922845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:57,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:57,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 15:26:57,263 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:26:57,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1457003107] [2022-03-20 15:26:57,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1457003107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:57,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:57,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 15:26:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394403222] [2022-03-20 15:26:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:26:57,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 15:26:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 15:26:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 15:26:57,266 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 15:26:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:26:57,456 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-03-20 15:26:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 15:26:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-03-20 15:26:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:26:57,460 INFO L225 Difference]: With dead ends: 46 [2022-03-20 15:26:57,460 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 15:26:57,461 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 15:26:57,463 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:26:57,464 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:26:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 15:26:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-20 15:26:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 15:26:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-03-20 15:26:57,496 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-03-20 15:26:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:26:57,496 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-03-20 15:26:57,496 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 15:26:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-03-20 15:26:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 15:26:57,497 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:26:57,497 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:26:57,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 15:26:57,498 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:26:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:26:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-03-20 15:26:57,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1415048834] [2022-03-20 15:26:57,503 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:26:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-03-20 15:26:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:26:57,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024079267] [2022-03-20 15:26:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:26:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:26:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 15:26:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 15:26:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 15:26:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 15:26:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 15:26:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 15:26:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 15:26:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:26:57,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024079267] [2022-03-20 15:26:57,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024079267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:57,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:57,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 15:26:57,614 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:26:57,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1415048834] [2022-03-20 15:26:57,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1415048834] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:57,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:57,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 15:26:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948431209] [2022-03-20 15:26:57,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:26:57,615 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 15:26:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 15:26:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 15:26:57,616 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 15:26:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:26:57,797 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-03-20 15:26:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 15:26:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 15:26:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:26:57,799 INFO L225 Difference]: With dead ends: 50 [2022-03-20 15:26:57,799 INFO L226 Difference]: Without dead ends: 48 [2022-03-20 15:26:57,800 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 15:26:57,802 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:26:57,804 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:26:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-20 15:26:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-03-20 15:26:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 15:26:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-03-20 15:26:57,814 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-03-20 15:26:57,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:26:57,814 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-03-20 15:26:57,814 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 15:26:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-03-20 15:26:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 15:26:57,815 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:26:57,815 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:26:57,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 15:26:57,816 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:26:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:26:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-03-20 15:26:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:57,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [955234931] [2022-03-20 15:26:57,817 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:26:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-03-20 15:26:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:26:57,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782171454] [2022-03-20 15:26:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:26:57,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:26:57,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:26:57,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752790776] [2022-03-20 15:26:57,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 15:26:57,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:26:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:26:57,831 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) [2022-03-20 15:26:57,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 15:26:57,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 15:26:57,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:26:57,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-20 15:26:57,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:26:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 15:26:58,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 15:26:58,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:26:58,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782171454] [2022-03-20 15:26:58,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:26:58,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752790776] [2022-03-20 15:26:58,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752790776] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:58,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:58,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 15:26:58,174 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:26:58,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [955234931] [2022-03-20 15:26:58,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [955234931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:58,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:58,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 15:26:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656316038] [2022-03-20 15:26:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:26:58,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 15:26:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 15:26:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-20 15:26:58,176 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-20 15:26:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:26:58,282 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-03-20 15:26:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 15:26:58,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-03-20 15:26:58,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:26:58,284 INFO L225 Difference]: With dead ends: 69 [2022-03-20 15:26:58,284 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 15:26:58,284 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 15:26:58,285 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:26:58,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 225 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:26:58,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 15:26:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-20 15:26:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 15:26:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-20 15:26:58,299 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-03-20 15:26:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:26:58,299 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-20 15:26:58,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-20 15:26:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-20 15:26:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 15:26:58,300 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:26:58,300 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:26:58,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 15:26:58,516 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:26:58,517 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:26:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:26:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-03-20 15:26:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:58,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [519209448] [2022-03-20 15:26:58,518 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:26:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-03-20 15:26:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:26:58,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77135708] [2022-03-20 15:26:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:26:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:26:58,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:26:58,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808185708] [2022-03-20 15:26:58,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 15:26:58,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:26:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:26:58,530 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) [2022-03-20 15:26:58,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 15:26:58,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 15:26:58,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:26:58,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 15:26:58,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:26:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-20 15:26:58,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:26:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-20 15:26:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:26:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77135708] [2022-03-20 15:26:59,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:26:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808185708] [2022-03-20 15:26:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808185708] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 15:26:59,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 15:26:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-03-20 15:26:59,190 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:26:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [519209448] [2022-03-20 15:26:59,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [519209448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:26:59,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:26:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 15:26:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527661558] [2022-03-20 15:26:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:26:59,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 15:26:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 15:26:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-20 15:26:59,191 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 15:26:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:26:59,313 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-03-20 15:26:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 15:26:59,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2022-03-20 15:26:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:26:59,314 INFO L225 Difference]: With dead ends: 65 [2022-03-20 15:26:59,314 INFO L226 Difference]: Without dead ends: 54 [2022-03-20 15:26:59,315 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-03-20 15:26:59,315 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:26:59,316 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 195 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:26:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-20 15:26:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-20 15:26:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 15:26:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-03-20 15:26:59,325 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 45 [2022-03-20 15:26:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:26:59,325 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-03-20 15:26:59,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 15:26:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-03-20 15:26:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 15:26:59,327 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:26:59,327 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:26:59,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 15:26:59,549 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:26:59,550 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:26:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:26:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-03-20 15:26:59,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:26:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1399725492] [2022-03-20 15:26:59,551 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:26:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-03-20 15:26:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:26:59,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387440521] [2022-03-20 15:26:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:26:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:26:59,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:26:59,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662141044] [2022-03-20 15:26:59,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 15:26:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:26:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:26:59,566 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) [2022-03-20 15:26:59,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 15:26:59,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 15:26:59,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:26:59,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-20 15:26:59,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:26:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-20 15:26:59,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:27:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-20 15:27:00,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:27:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387440521] [2022-03-20 15:27:00,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:27:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662141044] [2022-03-20 15:27:00,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662141044] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 15:27:00,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 15:27:00,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-03-20 15:27:00,014 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:27:00,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1399725492] [2022-03-20 15:27:00,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1399725492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:27:00,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:27:00,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 15:27:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927096789] [2022-03-20 15:27:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:27:00,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 15:27:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 15:27:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 15:27:00,016 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 15:27:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:27:00,063 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-03-20 15:27:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 15:27:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-03-20 15:27:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:27:00,073 INFO L225 Difference]: With dead ends: 66 [2022-03-20 15:27:00,074 INFO L226 Difference]: Without dead ends: 64 [2022-03-20 15:27:00,074 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-20 15:27:00,075 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 15:27:00,075 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 15:27:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-20 15:27:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-03-20 15:27:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 15:27:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-03-20 15:27:00,086 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2022-03-20 15:27:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:27:00,086 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-03-20 15:27:00,086 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 15:27:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-03-20 15:27:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 15:27:00,087 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:27:00,087 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:27:00,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 15:27:00,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:00,308 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:27:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:27:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 1 times [2022-03-20 15:27:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:00,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1025909383] [2022-03-20 15:27:00,309 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:27:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 2 times [2022-03-20 15:27:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:27:00,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215381478] [2022-03-20 15:27:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:27:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:27:00,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:27:00,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523000221] [2022-03-20 15:27:00,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 15:27:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:27:00,319 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) [2022-03-20 15:27:00,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 15:27:00,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 15:27:00,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:27:00,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-20 15:27:00,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:27:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-20 15:27:00,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:27:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-03-20 15:27:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:27:01,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215381478] [2022-03-20 15:27:01,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:27:01,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523000221] [2022-03-20 15:27:01,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523000221] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 15:27:01,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 15:27:01,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-03-20 15:27:01,016 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:27:01,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1025909383] [2022-03-20 15:27:01,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1025909383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:27:01,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:27:01,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 15:27:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307149836] [2022-03-20 15:27:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:27:01,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 15:27:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 15:27:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-20 15:27:01,017 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-20 15:27:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:27:01,213 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2022-03-20 15:27:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 15:27:01,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 62 [2022-03-20 15:27:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:27:01,216 INFO L225 Difference]: With dead ends: 90 [2022-03-20 15:27:01,216 INFO L226 Difference]: Without dead ends: 88 [2022-03-20 15:27:01,217 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-20 15:27:01,217 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:27:01,218 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:27:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-03-20 15:27:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-03-20 15:27:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-20 15:27:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-03-20 15:27:01,233 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 62 [2022-03-20 15:27:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:27:01,233 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-03-20 15:27:01,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-20 15:27:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-03-20 15:27:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 15:27:01,235 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:27:01,235 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:27:01,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 15:27:01,449 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:01,449 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:27:01,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:27:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-03-20 15:27:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:01,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1400351800] [2022-03-20 15:27:01,450 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:27:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-03-20 15:27:01,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:27:01,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483507035] [2022-03-20 15:27:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:27:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:27:01,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:27:01,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556082006] [2022-03-20 15:27:01,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 15:27:01,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:27:01,462 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) [2022-03-20 15:27:01,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 15:27:01,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 15:27:01,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:27:01,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 15:27:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:27:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-03-20 15:27:02,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:27:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-20 15:27:05,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:27:05,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483507035] [2022-03-20 15:27:05,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:27:05,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556082006] [2022-03-20 15:27:05,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556082006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 15:27:05,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 15:27:05,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-03-20 15:27:05,341 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:27:05,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1400351800] [2022-03-20 15:27:05,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1400351800] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:27:05,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:27:05,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 15:27:05,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767984907] [2022-03-20 15:27:05,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:27:05,341 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 15:27:05,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 15:27:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-03-20 15:27:05,342 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-20 15:27:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:27:05,931 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2022-03-20 15:27:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 15:27:05,932 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-03-20 15:27:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:27:05,933 INFO L225 Difference]: With dead ends: 121 [2022-03-20 15:27:05,933 INFO L226 Difference]: Without dead ends: 98 [2022-03-20 15:27:05,934 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-03-20 15:27:05,934 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 15:27:05,935 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 351 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 15:27:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-20 15:27:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-03-20 15:27:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 60 states have internal predecessors, (65), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-20 15:27:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-03-20 15:27:05,962 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 75 [2022-03-20 15:27:05,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:27:05,962 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-03-20 15:27:05,963 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-20 15:27:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-03-20 15:27:05,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 15:27:05,965 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:27:05,966 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:27:05,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 15:27:06,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:06,179 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:27:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:27:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 3 times [2022-03-20 15:27:06,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:06,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [585325020] [2022-03-20 15:27:06,180 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:27:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 4 times [2022-03-20 15:27:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:27:06,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692308233] [2022-03-20 15:27:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:27:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:27:06,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:27:06,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419035383] [2022-03-20 15:27:06,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 15:27:06,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:27:06,195 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) [2022-03-20 15:27:06,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 15:27:06,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 15:27:06,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:27:06,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 15:27:06,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:27:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-20 15:27:06,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:27:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-20 15:27:06,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:27:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692308233] [2022-03-20 15:27:06,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:27:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419035383] [2022-03-20 15:27:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419035383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 15:27:06,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 15:27:06,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-03-20 15:27:06,900 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:27:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [585325020] [2022-03-20 15:27:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [585325020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:27:06,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:27:06,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 15:27:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073085867] [2022-03-20 15:27:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:27:06,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 15:27:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:06,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 15:27:06,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-20 15:27:06,902 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-20 15:27:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:27:07,231 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2022-03-20 15:27:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 15:27:07,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2022-03-20 15:27:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:27:07,233 INFO L225 Difference]: With dead ends: 113 [2022-03-20 15:27:07,233 INFO L226 Difference]: Without dead ends: 76 [2022-03-20 15:27:07,234 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-20 15:27:07,234 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 16 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 15:27:07,234 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 230 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 15:27:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-20 15:27:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-20 15:27:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-20 15:27:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-03-20 15:27:07,248 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 79 [2022-03-20 15:27:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:27:07,249 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-03-20 15:27:07,249 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-20 15:27:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-03-20 15:27:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 15:27:07,249 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:27:07,250 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:27:07,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 15:27:07,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:07,463 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:27:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:27:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-03-20 15:27:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:07,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1587010139] [2022-03-20 15:27:07,464 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:27:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-03-20 15:27:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:27:07,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866415966] [2022-03-20 15:27:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:27:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:27:07,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:27:07,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077419189] [2022-03-20 15:27:07,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 15:27:07,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:27:07,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 15:27:07,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 15:27:07,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 15:27:07,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:27:07,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-20 15:27:07,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:27:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-20 15:27:07,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:27:10,363 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-03-20 15:27:10,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:27:10,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866415966] [2022-03-20 15:27:10,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:27:10,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077419189] [2022-03-20 15:27:10,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077419189] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 15:27:10,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 15:27:10,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-03-20 15:27:10,366 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:27:10,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1587010139] [2022-03-20 15:27:10,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1587010139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:27:10,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:27:10,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 15:27:10,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372394535] [2022-03-20 15:27:10,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:27:10,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 15:27:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:10,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 15:27:10,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-20 15:27:10,369 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-20 15:27:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:27:10,563 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-03-20 15:27:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 15:27:10,564 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-03-20 15:27:10,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:27:10,565 INFO L225 Difference]: With dead ends: 96 [2022-03-20 15:27:10,565 INFO L226 Difference]: Without dead ends: 71 [2022-03-20 15:27:10,565 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-03-20 15:27:10,566 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 15:27:10,566 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 297 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 15:27:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-20 15:27:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-20 15:27:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.0) internal successors, (44), 44 states have internal predecessors, (44), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 15:27:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-03-20 15:27:10,579 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 80 [2022-03-20 15:27:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:27:10,580 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-03-20 15:27:10,580 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-20 15:27:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-03-20 15:27:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-20 15:27:10,585 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 15:27:10,585 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 15:27:10,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 15:27:10,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:10,808 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 15:27:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 15:27:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-03-20 15:27:10,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:10,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1113714551] [2022-03-20 15:27:10,809 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 15:27:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-03-20 15:27:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 15:27:10,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734182370] [2022-03-20 15:27:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 15:27:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 15:27:10,817 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 15:27:10,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33936374] [2022-03-20 15:27:10,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 15:27:10,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 15:27:10,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 15:27:10,831 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 15:27:10,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 15:27:10,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 15:27:10,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 15:27:10,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-20 15:27:10,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 15:27:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-03-20 15:27:13,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 15:27:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-20 15:27:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 15:27:16,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734182370] [2022-03-20 15:27:16,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 15:27:16,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33936374] [2022-03-20 15:27:16,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33936374] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 15:27:16,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 15:27:16,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-03-20 15:27:16,955 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 15:27:16,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1113714551] [2022-03-20 15:27:16,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1113714551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 15:27:16,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 15:27:16,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 15:27:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633475345] [2022-03-20 15:27:16,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 15:27:16,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 15:27:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 15:27:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 15:27:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-03-20 15:27:16,957 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-03-20 15:27:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 15:27:17,371 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-03-20 15:27:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 15:27:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 86 [2022-03-20 15:27:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 15:27:17,372 INFO L225 Difference]: With dead ends: 71 [2022-03-20 15:27:17,372 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 15:27:17,373 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-03-20 15:27:17,373 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 15:27:17,373 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 275 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 118 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-03-20 15:27:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 15:27:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 15:27:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 15:27:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 15:27:17,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2022-03-20 15:27:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 15:27:17,374 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 15:27:17,374 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-03-20 15:27:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 15:27:17,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 15:27:17,377 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 15:27:17,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 15:27:17,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-20 15:27:17,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 15:27:20,854 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-03-20 15:27:20,854 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-03-20 15:27:20,854 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-03-20 15:27:20,854 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-03-20 15:27:20,854 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-20 15:27:20,854 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-20 15:27:20,854 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-20 15:27:20,855 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (<= (mod main_~A~0 4294967296) 1) (<= .cse0 1) (<= 1 .cse0))) [2022-03-20 15:27:20,855 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 1) (<= 1 .cse0) (= main_~p~0 1))) [2022-03-20 15:27:20,855 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-03-20 15:27:20,855 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse6 (mod main_~B~0 4294967296))) (and (= (mod main_~A~0 4294967296) main_~r~0) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse5 (div (+ (- 1) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse0 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse1 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse2 (* (- 2) .cse5)) (.cse4 (+ .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296))) (and (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse0 .cse1 2 (* main_~d~0 2) .cse2) 8589934592) 1)) (<= aux_div_v_main_~d~0_41_36 main_~r~0) (<= .cse3 .cse4) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse0 .cse1 (* aux_div_v_main_~d~0_41_36 2) 1 .cse2) 8589934592) 1)) (<= (+ .cse3 main_~d~0) (+ (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247) (<= .cse4 (+ .cse3 1)))))) (< main_~r~0 (+ (* main_~d~0 2) 1)) (<= 1 .cse6) (= main_~q~0 0) (<= .cse6 main_~r~0) (= main_~p~0 1))) [2022-03-20 15:27:20,855 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-20 15:27:20,855 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~B~0 4294967296))) (let ((.cse9 (<= .cse1 1)) (.cse2 (= main_~q~0 0)) (.cse0 (mod main_~A~0 4294967296)) (.cse10 (= main_~p~0 1))) (or (and (= .cse0 main_~r~0) (< main_~r~0 (* 2 .cse1)) (= main_~p~0 2) .cse2 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse1 main_~d~0)) (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (< 0 .cse1) (= (+ main_~d~0 main_~r~0) .cse0) .cse9 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse10) (and (= main_~d~0 .cse1) (< main_~r~0 .cse1) .cse9 .cse2 (<= .cse0 main_~r~0) .cse10)))) [2022-03-20 15:27:20,855 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296)) (.cse1 (mod main_~A~0 4294967296)) (.cse2 (= main_~p~0 1))) (or (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) (<= .cse0 1) (= main_~q~0 0) (<= .cse1 main_~r~0) .cse2) (and (= .cse1 (+ main_~r~0 .cse0)) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse1) (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse2))) [2022-03-20 15:27:20,856 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 15:27:20,856 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-03-20 15:27:20,856 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~A~0 4294967296) 1) (<= (mod main_~B~0 4294967296) 1)) [2022-03-20 15:27:20,856 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-20 15:27:20,856 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-20 15:27:20,857 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-20 15:27:20,857 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 15:27:20,859 INFO L719 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 2, 2, 2, 2, 2] [2022-03-20 15:27:20,860 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 15:27:20,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:27:20 BoogieIcfgContainer [2022-03-20 15:27:20,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 15:27:20,876 INFO L158 Benchmark]: Toolchain (without parser) took 24870.13ms. Allocated memory was 194.0MB in the beginning and 288.4MB in the end (delta: 94.4MB). Free memory was 137.3MB in the beginning and 131.3MB in the end (delta: 6.0MB). Peak memory consumption was 139.6MB. Max. memory is 8.0GB. [2022-03-20 15:27:20,876 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 153.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 15:27:20,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.21ms. Allocated memory was 194.0MB in the beginning and 240.1MB in the end (delta: 46.1MB). Free memory was 137.1MB in the beginning and 210.7MB in the end (delta: -73.6MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-03-20 15:27:20,877 INFO L158 Benchmark]: Boogie Preprocessor took 23.47ms. Allocated memory is still 240.1MB. Free memory was 210.7MB in the beginning and 209.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 15:27:20,877 INFO L158 Benchmark]: RCFGBuilder took 233.59ms. Allocated memory is still 240.1MB. Free memory was 209.1MB in the beginning and 198.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 15:27:20,877 INFO L158 Benchmark]: TraceAbstraction took 24408.39ms. Allocated memory was 240.1MB in the beginning and 288.4MB in the end (delta: 48.2MB). Free memory was 197.9MB in the beginning and 131.3MB in the end (delta: 66.6MB). Peak memory consumption was 154.7MB. Max. memory is 8.0GB. [2022-03-20 15:27:20,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 153.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.21ms. Allocated memory was 194.0MB in the beginning and 240.1MB in the end (delta: 46.1MB). Free memory was 137.1MB in the beginning and 210.7MB in the end (delta: -73.6MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.47ms. Allocated memory is still 240.1MB. Free memory was 210.7MB in the beginning and 209.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 233.59ms. Allocated memory is still 240.1MB. Free memory was 209.1MB in the beginning and 198.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 24408.39ms. Allocated memory was 240.1MB in the beginning and 288.4MB in the end (delta: 48.2MB). Free memory was 197.9MB in the beginning and 131.3MB in the end (delta: 66.6MB). Peak memory consumption was 154.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.4s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 2055 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 49 IncrementalHoareTripleChecker+Unchecked, 1631 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1303 IncrementalHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 424 mSDtfsCounter, 1303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 926 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=8, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 342 PreInvPairs, 453 NumberOfFragments, 2155 HoareAnnotationTreeSize, 342 FomulaSimplifications, 447 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 1494 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((A % 4294967296 == r && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && -1 * d / -2 <= r) && B % 4294967296 <= r) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((A % 4294967296 == r && d == p * (B % 4294967296)) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) && p == 1)) || ((((((((A == r + A / 4294967296 * 4294967296 && r / -2 <= -1 * d / 4) && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= \old(cond)) || 1 <= cond) && (\old(cond) == 0 || !(cond == 0)) RESULT: Ultimate proved your program to be correct! [2022-03-20 15:27:20,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...